In what areas was the united states a leader after the war?

a) politics
b) economics
c) politics & economics

The correct answer is the letter B.

The growth of the US economy was also fueled by historical events such as World War I (1914-1918), and World War II (1939-1945) when Europe was undergoing reconstruction, so the US provided loans and resulting in a huge GDP growth and consolidating definitively as the world's largest power.

d. china

good luck

d is the best choice

explanation:

the addition to geographic boundaries that might have  kept the people of the huang river civilization from traveling to far distance region is that they had learned about the other river valley civilizations but feared contact would bring invasion.

hope this .

plz give me brainliest!