The colombian exchange was based on interactions between the old war and
a) asia
b) the america’s
c) europe
d) africa

C

Explanation:

Because The people in Europe were being force to pray to a god they did not want to so they left Europe and went to the new world were they thought they would be free to do what they like. plz mark me brainlist thank you hope it helps :)

a social contract.

"a social contract is an agreement between citizens and their leader where the citizens give up certain freedoms in exchange for protection. the constitution of the united states is an example of a social contract."