Answer:
Thousands of Africans moved onto new land in Europe was the result of Columbian Exchange. Option B is the right answer.
Explanation:
It also paved way for the Africans for mass migration into Europe which promoted slave trade. It also converted Africans to an agrarian society. The result of Columbian exchange although promoted trade relationships, it paved way for hazardous pandemics that prevailed during the exchange.
Americans became aware many kinds of animal and plant species which was new to them but with it cane the diseases which devastated America. The result of Columbian exchange also promoted triangular trade where in Africans, Americans and British were involved active trade promoting practices.
Christopher brought horses, wheat bread and chicken from Europe and this was called exchange. Spanish were the first to trade slaves during Columbian exchange and because of which Spaniards gained profits.