Which best describes the columbian exchange?

a.
the conversation the native peoples to christianity by spanish friars

b.
the rate at which european currencies were traded for local american products

c.
the transfer of peoples, diseases, plants, and animals between the new and old worlds

Plz ? ? 20 points for this question ! hhjc6

Why did the federal government choose to give each tribal member a 25-year deed to the reservation land? this was the life expectancy of native americans at this time, and the government wished to grant rights for only a single generation. they considered this to be enough time to keep the area calm before they could take the land back again for sale. the united states government believed that the nutrients from the land would be depleted by the end of the deed. the government believed this would be enough time for the tribal members to become self-reliant and adapt to the farming lifestyle.

Which course of action did president carter propose in order to solve this problem for the next generation? a. contract with foreign nations to build wind turbines b. reduce federal spending on solar cell energy research c. drill fewer offshore wells to conserve marine life d. develop alternative energy sources