The answer is b- buying and selling goods
Because of the enslaved persons clause, escaped enslaved persons from one state cannot be PROTECTED by other states. The clause required slaves who flees to another state to be returned to the owner in the state from which that person escaped.
The US had missiles in Turkey, USSR decided they should place their own missiles near the US territory. Cuba was an ally to the Soviets, hence the crisis began.
He was born April 13 1743 in Virginia and he died on July 4 1826 on the 50th anniversary of the signing of the declaration of independence