Help please!! Select the correct answer.
Which one of the following spread agricultural technology?
O A.
the Silk Road
O B.
the East Wind
O c.
the Native Americans
OD.
the Trans-Atlantic Slave Trade

The caste system in india was used for what purpose? a) to ensure that all people had an adequate income b) to prevent the rich from taking too much power c) to provide social control and conformity according to one’s birth d) to draft a military capable of defending india from mongol invasion