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Corn, chili, pumpkins, tomatoes and potatoes did not exist as a resource in Europe before the Columbian Exchange.

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http://topdocumentaryfilms.com/america-before-columbus/

https://www.boundless.com/u-s-history/textbooks/boundless-u-s-history-textbook/ancient-america-before-1492-1/

http://www.nationalarchives.gov.uk/education/resources/native-north-americans/

https://theageofdiscovery.wikispaces.com/The+World+before+1492

http://toriavey.com/history-kitchen/2012/10/what-christopher-columbus-discovered-foods-of-the-new-world/

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Columbian Exchange- The transfer of disease, goods, and resources that took place as a result of the discovery of America by Columbus in 1492.

Ice Age- An interglacial period that consisted of severely cold climates that ended around 9683 A.D. at the start of the Holocene Epoch.

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The Columbian Exchange: Crash Course World History #23

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Syphilis did damage to both body and spirit, as the Europeans believed that it was God's punishment to them for what was happening in America because of them.

Llamas weren't as beneficial to Europeans as the horse was for Americans, but still new nonetheless.

Corn, chili, pumpkins, tomatoes, and potatoes became major crops for Europeans after their introduction by the Native Americans.

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Introduction of new diseases to which Natives had no immunity had eliminated large numbers of native populations, and almost entirely wiped out some civilizations.

The Mustang soon became the first horse to spread across America since they went extinct on the continent, and became a very valuable resource to Natives. Pigs began to destroy native crops and plants, as they did not fence their farms. Cattle soon took over where the bison roamed and ate much of the grass covering the plains.

New grains helped natives, but the weeds also were an unfortunate introduction for farming.

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Introduced Corn, chili, pumpkins, tomatoes and potatoes to Europeans. Large amounts of fish provided money. Llamas as a labor animal

Syphilis also introduced to the Europeans, and had serious effects on the Europeans.

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Wheat, barley, oats and rye introduced. Weeds came along with grain seed. Cattle, and livestock introduced, horses for the first time since Ice Age.

Also introduced was the plow, which greatly helped with Native farming.

Smallpox, measles, influenza introduced, had devastating effects.

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Pigs, grain (wheat, barley, oats, and rye), weeds, and cattle/livestock did not exist as a resource.