Answer: The Answer is C Manifest Destiny
Explanation: The early settlers believed that they should spread from the Atlantic ocean to the pacific.
Joseph McCarthy led the hunt for the communists in the U.S.
Milk is considered a commodity because it is the same product regardless of who sells it. your welcome hope that helped :)
The two principles of the federalism and separation of powers and checks and balances and you will have to decide what they mean for you because I am not you so I can not answer that but hope this helps