Answers:
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1. His voyages marked the Exchange's beginning
2. From both east to west and west to east
3. They all made countries of the Old World richer
4. Missionaries protected individuals, often at the cost of the native culture
5. smallpox
6. Immunity from smallpox and the flu because the native Americans tried to gain immunity from diseases such as smallpox, the flu and such.
7. African slaves were needed to work on sugarcane plantations
8. Corn
9. North America
10. Spanish is the main spoken language many South American countries
