the answer is C.) they all dealt with the expansion ........
A. wandering from place to place following herds and growing seasons :)
The main reason why the United States remained out of World War II prior to the Japanese attack on Pearl Harbor was because there was a very strong isolationist sentiment in the United States that had existed every since World War I.
C. An expression of Cold War tensions.
The arms race between the US and the USSR is the most well known arms race in history.
Translate this to english and I can help you