Describe federalism ,andswer the question me.

Federalism is a type of government in which the power is divided between the national government and other governmental units. It contrasts with a unitary government, in which a central authority holds the power, and a confederation, in which states, for example, are clearly dominant.

the navigation act prevented the colonies from exporting to countries other than britain and it prevented the importation of goods by other countries as well. so i believe the correct answer is d. other nations could not deliver goods to the colonies.

hope this .