Answer:
Capitalism
Explanation:
With U.S economic culture dependent on capitalism and increased influence of U.S.A over the world and downfall of communism led to increased influence of capitalism.
Answer:
Earthquake and Tsunamis
Explanation:
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The columbian exchange had a very negative effect on the Native Americans. The native americans received mostly disease from Europeans, but also certain plants and animals. Syphilis is one thing Europeans contracted from Native Americans.