How did college and high school change around the turn of the 20th century? ?

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.

Gettysburg address question. what is the purpose of this address?

Reasons for factor mobility of a combine harvester, cotton, an oil platforn and a woodland