I think trenches had zigzag patterns because they could make people had a better aim at shot and more protection.
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An enormously influential biological exchange occurred when Europeans landed in the Americas, to the benefit and detriment of Europeans and Natives. Old World—New World plant and animal exchange resulted in sugar and bananas crossing the Atlantic while pigs, sheep, and cattle arrived in the Americas. The transfer of European diseases had catastrophic repercussions: influenza, typhus, measles, and smallpox devastated the Native American population. The Biological Exchange (also called the Columbian Exchange or Grand Exchange) is one of the most significant biogeological events of world history, affecting almost every society on earth and historians have only recently begun to question the event and the way it has been traditionally interpreted. In the traditional interpretation of the Biological Exchange, Indians lived in harmony with their environment in a pristine world and both the Natives and the environment were suddenly devastated following the arrival of Europeans. Biological exchanges of plants and animals enabled a better and longer life for Europeans, who took food items like potatoes and corn back to the old world were suddenly able to grow food to support their large population while reducing the population overgrowth by transporting humans to the new world.
Answer:
President Ronald Reagan and Soviet Common Secretary Mikhail ... “In Reagan's see, Gorbachev was a communist, and might be ... “But they required to discover a way to overcome forty a long time of Cold War philosophy. ... a teacher of history emeritus specializing in U.S. outside relations at the College of Virginia.
Explanation:
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Think of sociology as socially and you’ll be set. then the studies of relationships between groups or individuals is obviously psychology
