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I think its A.The U.S. economy was stronger than the economies of European countries. 3
The Klondike Gold Rush was a migration by an estimated 100,000 prospectors to the Klondike Claims began to be sold between miners and speculators for considerable sums. Furthermore, the Pacific ports closest to the gold strikes were desperate to encourage The process was repeated until the gold was reached.
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Answer:
A. It led to the spread of diseases in the Americas, killing thousands of Native Americans.
Explanation:
The major drawback of the Columbian Exchange was the diseases that Europeans brought to the New World beginning around the 15th century. Diseases like smallpox, malaria, and yellow fever devastated Native American populations and was even responsible for bringing about the demise of entire Native American tribes.