Why was the word "Columbian" used to describe the exchange?

Columbian

Explanation:

The term Columbian is used to describe the exchange in America. It only began after Christopher Columbus discover America and began the trade known as Columbian Exchange. Spanish settlers made trading connections with the natives and exchange goods and materials. They also started establishing colonies in the New World.

the correct statement is letter a.   according to the mandate of heaven, kings were considered godlike beings, so they could do as they .

the mandate of heaven is a chinese political and religious ideology used since ancient times to justify the rule of the king or emperor of china, that has been in place since the zhou until the dynasty system ended. it has been created to justify the zhou as the main power of the region. in order to keep harmony, the ruler has to make what he wants and what people want. he had to make good choices to satisfy the people and then they will be happy and keep you in power.