The two countries changed from being fierce rivals to being friendly allies. The two countries changed from being neutral toward each other to being rivals.
The Civil War is an example of a period of time in which the power of the Executive branch expanded.
So, the Civil War influenced the role of government by making the Federal Executive chiefly powerful in the people's idea for their and their government's welfare.
what do you mean you have been warned?
the political belief is communism