Sunday, January 26, 2020

Arab Israeli War 1967

Arab Israeli War 1967 Introduction Israel and Arabs have fought a number of wars after 1947. After the creation of Israel in 14 May 1948, Arab and Israel became front to front in 1949, 1956, and 1967 and in 1973. Among all those the war of 5 -10 June 1967 also famous for six days war was the one of the major conflict. For Arabs it was the revenge and for Israel it was a war of survival. The outcome of war became a defeat for Arabs and victory for Israel. The entire Sinai Peninsula, the Golan Heights and Jordanian territory west of River Jordan including Jerusalem was captured by Israel. â€Å"This campaign taken as one of example in the history as decisive effects on striking to enemy defenses through deep penetration in very short period of time.† (Army command and staff collage, 2012). Aim The aim of this presentation is to analyze the decision making and brought out lesson learned from 1967 Arab Israel war. Historical Background Historically Arabs and Jews are sprung from the prophets Ismael and Issac both sons of prophet Abraham. Prophet Ismael is believed to be the ancestor of the Arabs while Prophet Issac became the ancestor of Jews. So for both the Palestine is holy land. The creation of Israel on 14 May 1948 was the main cause between Jews and Arabs conflicts. Arabs considered the creation of Israel as an independent State is plot against the people of Palestine by the Europeans and Americans. In 1956 Israel attack Egypt with the support of Britain and France to open Suez Canal. They occupied Gaza strip and large part of Sinai but left the area because of international pressure and 1967 war was taken as a sequel to these conflicts. Major factors for the 1967 conflict After the 1956 war there are many issues arises in this area. Arabs are looking to revenge for their loss in 1956 and for Israel it was always the survival after its creation. According to Rowman Littlefield (2000) some of the important factors, which contributed directly towards escalation of 1967 conflict, are as follows: a. Refusal of Arabs to recognize Israel as independent state. Increasing activities of Palestinian guerrillas Al- FATEH against Israel. b. Withdrawal of United Nations Emergency Force (UNEF) on 19 May 1967 that increased the already existing tension between Egypt and Israel. c. The Mutual Defense Pact signed by Egypt and Syria in 4 Nov 1966 and Jordan Egypt Defense Agreement on 30 May 1967 that strategically threaten the Israel d. Closing of Channels of Tiran that cut off the Israeli access to Red sea. On which the Israelis immediately responded with a pre-emptive attack on June 5, 1967 that is starting of famous six-day war. Analyze the 1967 War Short six days war of 1967 change the big boundary in the Middle East. After this war Israelis strategic situation had changed and they became more stronger where as the Arabs faces the humiliating loss. Different historians analyzed this war in their different way. Army command and staff collage (2012) analyzed this six days war as follows. Arabs National Aim/Objectives: Arabs had set for themselves the aim of achieving political victory over Israel. To achieve this, they signed defense pacts among themselves and planned to give economic, political, psychological and military pressure to Israel. National Strategy: Ever since the creation of the Israel as independent State, the Arab’s national strategy is the destruction of it and creation of an independent Palestine. Military Strategy: The Arabs had no offensive intention at the outset. Their total emphasis was on achieving a political victory and preventing Israel from going to war. Therefore, their military strategy was: (1) Deterrence through troops concentration helping guerrilla activity and playing the card of ‘Crush Israel’, in the Arab world. (2) Force mobilization for long duration and closing of Straits of Tiran, which Israel could not able to afford. (3) If war is imposed, force Israel to fight war on three fronts, all from Sinai, Jordan and Syria. Centre of Gravity: Arabs identified Israel Defense forces as the center of gravity. But they failed to notice that within these their strength lay in their mobility. Concept of Operation: a. War on more than two fronts to keep Israelis committed in all directions. b. Initiate actions like forward concentration, guerrilla activities and closing of Straits of Tiran which will force Israel either to submit or attack the Arabs, which is politically advantageous for Arabs. c. If the war starts, involve Israel in long-drawn war of attrition and exploit their numerical inferiority. Israel National Aim/Objectives: The national aim of Israel was the survival and defense of their homeland. Their strategic concept has been to avoid war but if a war is imposed they were to go for a quick and decisive war. National Strategy: Israel had the national aim of ensuring the sovereignty and territorial integrity of their country by employing all possible instruments of national power like: military, political and diplomatic. Military Strategy: Israel military objective was offensive against Arabs for defense of their homeland. Therefore there military strategy was: (1) Surprise Arabs both at strategic and tactical level to lure them into a false sense of complacency. (2) Undertake a pre-emptive air strike to achieve complete air superiority over Sinai. (3) Undertake a pre-emptive ground offensive too. (a) Fight the war on enemy territory and seek decisive battle on their soil. (b) Have a short and decided war destroying the Egyptian forces in Sinai. (c) If Jordan and Syria also enter the war, then capture strategic objectives of West Bank of River Jordan and the Golan Heights. Center of Gravity: Israelis rightly identified that within the three Arab countries the center of gravity laid in Egypt especially its armed forces. Once Egyptian Army Is destroyed, Syria and Jordan could never initiate an offensive on their own. They accordingly dealt with the Egyptian air and ground forces first deferring Syria and Jordan for the time being. Concept of Operation: Employment of all conceivable political and psychological measures to give an impression to Arabs that Israel had been outwitted in time and space and was not in a position to under-take a major offensive. Having completely deceived the Arabs, acquire complete air superiority by under taking a pre-emptive air strike against Egyptian air bases followed by similar strikes against Jordanian and Syrian air bases. Appreciating that center of gravity lay with Egyptian Army in Sinai, Israelis decided to affect a swift dislocation of Egyptian defenses by breaking-through the critical triangle of Rafah, EI-Arish and Abu Agheila, isolate them and then carry-out destruction of the trapped enemy. Maintain initially a defensive posture against Syria and Jordan. And after secured and destroy the Egyptian side in the Sinai, concentrate forces against Jordan and Syria. Main Reason of Loss/Achievement of War Failure Threat Perception by Arabs: There are full of examples in history that whenever a nation or a commander failure to calculate the capabilities and intentions of the enemy’s he had to pay heavy price. Same here the Arabs completely misread Israeli reactions, in-spite of there own provocative actions. They failed to perceive the inherent mobility of Israeli ground forces and went wrong in their appreciation that they would be able to involve Israel into a long-drawn war of attrition on their three successive defense lines which Israel couldn’t manage. Strategy of Pre-emption by Israelis: Fully conscious vulnerability due to lack of strategic depth and multi-directional threat from Arab states, Israel had well prepared to use the option of pre-emption. Israelis knew that it would be difficult to destroy Arabs in full front war without taking initial initiative. So that they use the strategy of pre-emption for which they are fully prepared. Lessons Learnt Threat Perception: The correct visualization of enemy was very important to gain initiative in war which the Arabs failed resulting loss in war. Surprise: Surprise at strategic as well as tactical level in war is very key to achieve success. In spite of inferior in number and equipment Israeli achieve success because of there surprise not only lies on the military but at political leadership as well. Strategy of Pre-emption: Israel’s strategy of pre-emption adequately showed the importance of this strategy especially for a force inferior in number and equipment. Training: High standard mission oriented training can bring amazing results. Training is the only aspect by which one can offset the quantitative superiority of enemy as shown by Israelis in this war. Intelligence: Correct intelligence about enemy intents, capabilities and preparation has always been of paramount importance. This fact was further highlighted by these wars. Decision Theories in 1967 in War Cognitive performance: As crisis induced stress grows up and need of more effective decision making authority and bold leadership. â€Å"When stress was low, Israelis decision makers evaluated all courses properly and made decisions for their interest. And their stress increased after closing of straits, which was perceived as a threat to their basic values. During this situation also Israel’s decision makers were psychologically prone to reliance on past experience, which created a greater conceptual rigidity as a guide to coping with current threats to basic values. They seemed to be acutely aware of their complex environment. Increasing stress and fatigue during this crisis did not weaken their dimension of cognitive performance.† (Brecher and Geist ,1980). Focus on immediate objectives: We find that Israelis decision makers gave more attention to immediate than long-term objectives in this 1967 crisis. Like countering the blockade of the Straits, withdrawal of UNEF and Arabs military build up. But long-term goals and interests influenced all the decisions taken after the crisis. Brecher and Geist (1980) clustered the decisions into five stress phases corresponding to time periods. Which are detailed in table below. S.N. Stress Phases Time Periods Decisions Taken 1 Low Stress Phase Before 17 May Issue a threat of retaliation against Syria – 7 May Place the IDF on alert – 15 May Limited mobilization – 16 May 2 Rising Stress Phase 17–22 May 1967 Order further mobilization of IDF reserves – 17 May Institute large scale mobilization – 19 May Shift IDF from defensive to offensive posture – 19 May Authorize the mobilization decision – 21 May 3 Higher Stress Phase 23-27 May 1967 Postpone decision on military response to Egypt’s massing of troops- 23 May Send Foreign Minister to U.S.- 23 May Warn the U.S. that an Egyptian attack was imminent Await Foreign Ministers report on his discussions in Paris, London, and Washington- 26 May 4 Highest Stress Phase 28 May- 4 June Delay pre-emptive decision again- 28 May Renew the IDF alert- 28 May Send Director of Counter Intelligence to U.S.- 30 May Form a National Unity Government- 1 June Crystalize military plans – 2 June Launch pre-emptive air strike – 4 June 5 Declining Stress Phase After 4 June Warn Jordan against military intervention – 5 June Delay attack on Jerusalem’s Old City – 5 June Encircle the Old City – 6 June Enter to Old City- 7 June Halt IDF advance east of the Canal – 7 June Not to cross Syrian border – 7 June Delay attack on Syria -8 June Scale the Golan Heights – 9 June Accept cease fire – 10 June Rational Theory: Rational choice theory provides decision-makers choose their best options for their interest. It tell us that when faced with risk, decision makers consider the expected values and probabilities of possible outcomes and choose the option with the highest value. â€Å"For Israel and Egypt, those periods were a turbulent period of international relations. During those times both Israel and Egypt were constantly faced with â€Å"risky† decisions while at the brink of war. The decisions made by these two states, specifically the decisions to go to war, were sometimes unexpected and unexplainable given current models of rational choice.† (Kelly, 2008). Conclusion Although the 1967 Arab – Israel war was limited type of war happened only for six days, it has been the favorite subjects for military historians. This war gives real picture of saying â€Å" Offense is best form of Defense.† This war shows how leadership, wills, motivation and training count in war in spite of technology. Reference Army Command and Staff Collage. (2012). Military History Primer. Kathmandu: Army Command and Staff Collage. Brecher, M., Geist, B. (1980). Decision in Crisis: Israel, 1967 and 1973. Vol. 1. (Pg. 341-394). California: University of California. Bregman, A. (2009). Israel’s Wars: A History since 1947. Routledge. Howard, M., and Hunter, R. (2012). Israel and the Arab World: the Crisis of 1967. Routledge. Kelly, N. and Christopher, B. (2008). Ripe without warning: Israel and Egypt 1967-1973. African Journal of Political Science and International Relations. Vol. 2 (1), (Pg. 013-019). Retrieved from http://www.academicjournals.org/AJPSIRà ¢Ã¢â€š ¬Ã‚ ¨. Popp, R. (2006). Stumbling Decidedly into the Six-Day War. MIDDLE EAST JOURNAL. Vol. 60(2), (Pg. 281-309) Remnick, D. (2007). The Seventh Day: Why the Six Day War is still being fought. Sudetic, S. (2014). Pre-Emption and Israeli Decision- Making in 1967 and 1973. Routledge. Retrieved from http://www.e-ir.info/2014/03/16/pre-emption-and-israeli-decision-making-in-1967-and-1973/

Saturday, January 18, 2020

Philippine Education Essay

The system of education in the Philippines was patterned both from the educational systems of Spain and the United States. However, after the liberation of the Philippines in 1946, the systems have changed radically. The Department of Education (or DepEd) administers the whole educational system, which also includes the allocation of funds utilized for school services and equipment (such as books, school chairs, etc.), recruitment of teachers for all public schools in the Philippines, and the supervision and organization of the school curricula. see more:k to 12 curriculum advantages and disadvantages The former education system of the Philippines is composed of 6 years of elementary education starting at the age of 6 or 7, and 4 years of high school education starting at the age of 12 or 13. In this system, education is not compulsory. However, since June 4, 2012, DepEd started to implement the new K-12 educational system,[3] which includes the new curricula for all schools (see the section). In this system, education is now compulsory. All public and private schools in the Philippines must start classes from a date mandated by the Department of Education (usually every first Monday of June for public schools only), and must end after each school completes the mandated 200-day school calendar of DepEd (usually around the third week of March to the second week of April). The implementation of the K-12 program is â€Å"phased†. The first phase of the implementation will start on SY 2012-2013. During this school year, universal kindergarten will be finally offered, and will now be a part of the compulsory education system; and a new curriculum for Grade 1 and Grade 7 students would be introduced. By SY 2016-2017, Grade 11/Year 5 will be introduced, and Grade 12/Year 6 by SY 2017-2018; with the phased implementation of the new curriculum finished by the SY 2017-2018. Students in 2nd year to 4th year high school this SY 2012-2013 are not included in the program. It is only applicable to students from Kinder to 1st year high school which is now called Grade 7. However, during the new educational cycle, from 2016 to 2018, college enrollment could slow down because of the entrance of the lower-year students to the new educational system. Primary Education Elementary school, sometimes called primary school or grade school (Filipino: paaralang elementarya, sometimes mababang paaralan), is the first part of the educational system, and it includes the first six years of compulsory education (grades 1-6). These grades are further grouped (informally) accordingly into: primary level, which includes the first three grades (grades 1-3), and intermediate level, which includes the last three grades (grades 4-6). The elementary school education covers a smaller but wider than the junior and senior high school because of the spiral approach educational technique. In public schools, the core/major subjects that are introduced starting grade 1 include mathematics, Filipino, and Makabayan (until grade 3, this subject is synonymous to social studies, but also incorporate values education and the fundamentals of political science). English is only introduced after the 2nd semester of grade 1. Science is only introduced starting grade 3. Heograpiya (geography), kasaysayan (history), and sibika (civics) (abbreviated as HEKASI), is only introduced starting grade 4 (similar also to social studies but focuses more on the subjects earlier stated). Minor subjects then include music, arts, physical education, and health (abbreviated as MAPEH). In private schools, subjects in public schools also include those of the public schools, with the additional subjects including: computer education and HELE (stands for home economics and livelihood education; while in Christian schools or in Catholic schools, religious education. International schools also have their own subjects in their own language and culture. From grades 1-3, students will be taught using their mother tongue, meaning the regional languages of the Philippines (also called as dialects) will be used in some subjects (except Filipino and English) as a medium of instruction. It may be incorporated as a separate subject. But from grade 4, Filipino and English as a medium of instruction will then be used. On December 2007, Philippine president Gloria Macapagal Arroyo announced that Spanish is to make a return as a mandatory subject in all Filipino schools starting in 2008 but it didn’t come into effect. DECS Bilingual Policy is for the medium of instruction to be Filipino for: Filipino, Araling Panlipunan, Edukasyong Pangkatawan, Kalusugan at Musika; and English for: English, Science and Technology, Home Economics and Livelihood Education. Article XIV, Section 7 of the 1987 Philippine constitution mandates that regional languages are the auxiliary official languages in the regions and shall serve as auxiliary media of instruction therein. As a result, the language actually used in teaching is often a polyglot of Filipino and English with the regional language as the foundation, or rarely the local language. Filipino is based on Tagalog, so in Tagalog areas (including Manila), Filipino is the foundational language used. Philippine regional languages are used in the provinces in the teaching of Makabayan. International English language schools use English as the foundational language. Chinese schools add two language subjects, such as Min Nan Chinese and Mandarin Chinese and may use English or Chinese as the foundational language. The constitution mandates that Spanish and Arabic shall be promoted on a voluntary and optional basis. Following on this, a few private schools mainly catering to the elite include Spanish in their curriculum. Arabic is taught in Islamic schools. Until 2004, primary students traditionally sat for the National Elementary Achievement Test (NEAT) administered by the Department of Education, Culture and Sports (DECS). It was intended as a measure of a school’s competence, and not as a predictor of student aptitude or success in Secondary school. Hence, the scores obtained by students in the NEAT were not used as a basis for their admission into Secondary school. During 2004, when DECS was officially converted into the Department of Education (DepEd), and also, as a result of some reorganization, the NEAT was changed to National Achievement Test (NAT) by the Department of Education (DepEd). Both the public and private elementary schools take this exam to measure a school’s competency. As of 2006, only private schools have entrance examinations for Secondary school. The DepEd expects over 13. 1 million elementary students to be enrolled in public elementary schools for school year 2009–2010. Though elementary schooling is compulsory, latest official figures show 27. 82% of Filipino elementary-aged children either never attend or never complete elementary schooling, usually due to the absence of any school in their area, education being offered in a language that is foreign to them, or financial distress. In July 2009 DepEd acted to overcome the foreign language problem by ordering all elementary schools to move towards mother-tongue based learning initially. The order allows two alternative three-year bridging plans. Depending on the bridging plan adopted, the Filipino and English languages are to be phased in as the language of instruction for other subjects beginning in the third and fourth grades. Secondary education PSHS Main Campus. Note the disparity between rural and urban education facilities in the Philippines. Secondary school in the Philippines, more commonly known as â€Å"high school† (Filipino: paaralang sekundarya, sometimes mataas na paaralan), consists of four levels largely based on the American schooling system as it was until the advent of the comprehensive high schools in the US in the middle of last century. The Philippine high school system has not moved much from where it was when the Philippines achieved independence from the US in 1946. It still consists of only four levels with each level partially compartmentalized, focusing on a particular theme or content. DepEd specifies a compulsory curriculum for all high schooling, public and private. The first year of high school has five core subjects, Algebra I, Integrated Science, English I, Filipino I, and Philippine History I. Second year has Algebra II, Biology, English II, Filipino II, and Asian History. Third year has Geometry, Trigonometry, Chemistry, Filipino III, and World History and Geography. Fourth year has Calculus, Advanced Algebra, Physics, Filipino IV, Literature, and Economics. Minor subjects may include Health, Music, Arts, Technology and Home Economics, and Physical Education. In selective schools, various languages may be offered as electives, as well as other subjects such as computer programming and literary writing. Chinese schools have language and cultural electives. Preparatory schools usually add some business and accountancy courses, while science high schools have biology, chemistry, and physics at every level. Secondary students used to sit for the National Secondary Achievement Test (NSAT), which was based on the American SAT, and was administered by DepEd. Like its primary school counterpart, NSAT was phased-out after major reorganizations in the education department. Now the National Achievement Test is administered to second year students. Higher education institutions, both public and private, administer their own College Entrance Examinations (CEE). Vocational colleges usually do not have entrance examinations, simply accepting the Form 138 record of studies from high school, and enrolment payment. Reference: http://en. wikipedia. org/wiki/Education_in_Philippines.

Friday, January 10, 2020

The Most Incredibly Overlooked Solution for Cause and Effect Essay

The Most Incredibly Overlooked Solution for Cause and Effect Essay The developing childhood obesity epidemic is a consequence of technology. Eating disorders are a critical health issue. The first source of obesity is too obvious and it's a massive intake food. The folks who suffer from obesity frequently have a very low quality of life too. The Little-Known Secrets to Cause and Effect Essay The latter was often utilized in the area of academic writing. This kind of assignment is a bit different from many other college tasks and has multiple requirements, which might significantly complicate the procedure. Quit worrying because writing isn't a burden, but a challenge you should be inclined to take on. Make certain that you have at the very least a day between when you wrote your very first draft and when you return to edit it. A cause is the thing that makes something happen, and a result is what the results are due to the cause. The effect is the consequence. In additi on, there are less important ones that are known as the contributory results and causes. There's psychological effect too. In everyday life you've already utilized the fundamentals of analysis of causes or effects. Such analysis helps not just to define why something has occurred, but also to understand the character of phenomena and the way to behave in a specific case. A cause and effect essay is the sort of paper that the writer is using to analyze the causes and effects of a certain action or event. You can have several results or numerous causes based on your essay's structure. The Upside to Cause and Effect Essay The cause and effect essay outline is likely to serve you as a guide for the remainder of the paper. Cause and effect essay have many sub-types. It is one of them. Writing a superb essay about cause and effect is simpler than it might seem. Your essay topic is a core component of any kind of essay. Picking the most suitable topic has to be carried out with care because it's the fundamental foundation of essay writing. Deciding on the essay topic has to be carried out carefully. Once more, based on the content you've got to provide, the essay needs to be organized to suit your information efficiently and neatly. Your essay needs to prove your thesis statement. A great essay should be correctly backed up with information. Don't be afraid to speak to our Essay Writing Service and expert essay writers will gladly aid you with your assignment. The Ultimate Cause and Effect Essay Trick Before you commence working on cause and effect essay outline the very first thing you have to do is to pick a winning topic. Writing about the reason and effect essay topics connected with the school's popularity or surviving the initial year in college might be fine to grab the interest of your peers. Keep in mind your time is limited and you don't need to waste any of that attempting to develop an incorrect topic. While you might not realize it putting a kid facing a computer or television unattended does not fulfill the attention needs of the kid. Facts, Fiction and Cau se and Effect Essay Cause and effect is a typical approach to organizing and discussing ideas. Regardless of what way you select, you must compose reasonable topic sentences to each paragraph. Do a little research in case you do not know anything about the topic assigned. To compose a great cause and effect essay, search for extra info in the library, online, or interview someone who knows enough about the subject. Before anything else, it's a great idea to generate a list of all probable results and the causes linked to your topic to help your topic become more focused. Questions are fundamental in regards to presenting the effects. You may have to narrow a wide topic. The topic may be more difficult to produce.

Wednesday, January 1, 2020

Coca (Cocaine) History, Domestication, and Use

Coca, the source of natural cocaine, is one of a handful of shrubs in the Erythroxylum family of plants. Erythroxylum includes over 100 different species of trees, shrubs and sub-shrubs native to South America and elsewhere. Two of the South American species, E. coca and E. novogranatense, have potent alkaloids occurring in their leaves, and those leaves have been used for their medicinal and hallucinogenic properties for thousands of years. E. coca originates from the montaà ±a zone of the eastern Andes, between 500 and 2,000 meters (1,640-6,500 feet)  above sea level. The earliest archaeological evidence of coca use is in coastal Ecuador, ca 5,000 years ago. E. novagranatense is known as Colombian coca and it is more able to adapt to different climates and elevations; it first up in northern Peru beginning about 4,000 years ago. Coca Use The ancient method of Andean cocaine use involves folding coca leaves into a quid and placing it between the teeth and the inside of the cheek. An alkaline substance, such as powdered wood ash or baked and powdered seashells is then transferred into the quid using a silver awl or pointed tube of limestone. This method of consumption was first described to Europeans by the Italian explorer Amerigo Vespucci, who met coca users when he visited the coast of northeastern Brazil, in AD 1499. Archaeological evidence shows the procedure is much older than that. Coca use was part of ancient Andean daily life, an important symbol of cultural identity in ceremonies, and used medicinally as well. Chewing coca is said to be good for relief of fatigue and hunger, beneficial for gastrointestinal illnesses, and said to ease the pain of dental caries, arthritis, headaches, sores, fractures, nosebleed, asthma, and impotence. Chewing coca leaves also is believed to ease the effects of living in high altitudes.   Chewing more than 20-60 grams (.7-2 ounces) of coca leaves results in a cocaine dose of 200-300 milligrams, equivalent to one line of powdered cocaine. Coca Domestication History The earliest evidence of coca use discovered to date comes from a handful of preceramic sites in the Nancho Valley. Coca leaves have been direct-dated by AMS to 7920 and 7950 cal BP. Artifacts associated with coca processing were also found in contexts dated as early as 9000-8300 cal BP. What is the AMS dating method?What does cal BP mean? Evidence for coca use has also been from in caves in the Ayacucho valley of Peru, within levels dated between 5250-2800 cal BC. Evidence for coca use has been identified from most cultures in South America, including Nazca, Moche, Tiwanaku, Chiribaya and Inca cultures. According to ethnohistoric records, horticulture and use of coca became a state monopoly in the Inca empire about AD 1430. The Inca elites restricted use to the nobility beginning in the 1200s, but coca continued to widen in use until all but lowest classes had access at the time of the Spanish conquest. Archaeological Evidence of Coca Use Nanchoc valley sites (Peru), 8000-7800 cal BPAyacucho valley caves (Peru), 5250-2800 cal BCValdivia culture (3000 BC) of coastal Ecuador (may represent long-distance trade or domestication)Peruvian coast (2500-1800 BC)Nazca figurines (300 BC-AD 300)Moche (AD 100-800) pots illustrate a bulging cheek, and coca leaves in gourds have been recovered from Moche tombsTiwanaku by AD 400Arica, Chile by AD 400The Cabuza culture (ca AD 550) mummies buried with coca quids in their mouths In addition to the presence of coca quids and kits, and the artistic depictions of coca use, archaeologists have used the presence of excessive alkali deposits on human teeth and alveolar abscesses as evidence. However, it isnt clear whether abscesses are caused by coca use, or treated by coca use, and results have been ambiguous about using excessive calculus on teeth. Beginning in the 1990s, gas chromatography was used to identify cocaine use in mummified human remains, particularly the Chirabaya culture, recovered from the Atacama Desert of Peru. The identification of BZE, a metabolic product of coca (benzoylecgonine), in hair shafts, is considered ample evidence of coca use, even for modern-day users. Coca Archaeological Sites San Lorenzo del Mate (Ecuador), 500 BC-AD 500, adult male interment with excessive calculus deposits on his teeth, an associated decorated shell spatula and a small bowl-like deposit of an alkali substance (probably once in a gourd)Las Balsas (Ecuador) (300 BC-AD 100). Cal receptaclePLM-7, Arica site in coastal Chile, 300 BC, coca kitPLM-4, Tiwanakoid sites in Chile with a bag full of coca leavesLlullallaco, Argentina, Inca period child sacrifices exhibited coca consumption prior to death Sources: Bussmann R, Sharon D, Vandebroek I, Jones A, and Revene Z. 2007. Health for Sale: The Medicinal Plant Markets in Trujillo and Chiclayo, Northern Peru. Journal of Ethnobiology and Ethnomedicine 3(1):37.Cartmell LW, Aufderheide AC, Springfield A, Weems C, and Arriaza B. 1991. The Frequency and Antiquity of Prehistoric Coca-Leaf-Chewing Practices in Northern Chile: Radioimmunoassay of a Cocaine Metabolite in Human-Mummy Hair. Latin American Antiquity 2(3):260-268.Dillehay TD, Rossen J, Ugent D, Karathanasis A, Và ¡squez V, and Netherly PJ. 2010. Early Holocene coca chewing in northern Peru. Antiquity 84(326):939-953.Gade DW. 1979. Inca and colonial settlement, coca cultivation and endemic disease in the tropical forest. Journal of Historical Geography 5(3):263-279.Ogalde JP, Arriaza BT, and Soto EC. 2009. Identification of Psychoactive Alkaloids in Ancient Andean Human Hair by Gas Chromatography/Mass Spectrometry. Journal of Archaeological Science 36(2):467-472.Plowman T. 1981 Amazonia n coca. Journal of Ethnopharmacology 3(2-3):195-225.Springfield AC, Cartmell LW, Aufderheide AC, Buikstra J, and Ho J. 1993. Cocaine and Metabolites in the Hair of Ancient Peruvian Coca Leaf Chewers. Forensic Science International 63(1-3):269-275.Ubelaker DH, and Stothert KE. 2006. Elemental Analysis of Alkalis and Dental Deposits Associated with Coca Chewing in Ecuador. Latin American Antiquity 17(1):77-89.Wilson AS, Brown EL, Villa C, Lynnerup N, Healey A, Ceruti MC, Reinhard J, Previgliano CH, Araoz FA, Gonzalez Diez J et al.  2013. Archaeological, radiological, and biological evidence offer insight into Inca child sacrifice. Proceedings of the National Academy of Sciences 110(33):13322-13327.