Immigrate in a sentence

How does federalism limit the power of government in the united states? a. it requires the national government to share power with state governments. b. it ensures that one state cannot make laws that affect all the other states. c. it requires the three branches of the national government to share powers. d. it allows the judicial branch to rule on laws that affect the entire country.

The principle that the geoglical processes that we see today have occurred through out earths history is called

Where is sub-saharan africa located?