Answer:
C: The increasingly sophisticated stone technology
It would be d - No other Nation asked for U.S help in the war effort until 1942.
The answer fir this question is 577
Answer:
The Cold War was an important influence on almost all aspects of American society. Cultural antagonism between the United States and Soviet Union had both positive and negative repercussions. Mutual fear between the two countries led to political confrontations; some of which nearly led to world war...Also Can I get Brainliest
Explanation: