1. Who benefited most from WWI?

France and Serbia

Reason: France got revenge from a situation that happen in 1870, and they have received the honor Strongest Continental Power. And they also regained Alsace-Lorraine (A piece of French Territory in Northeast France). And Serbia has received great recognition for their power.

I hope this helps, and Happy Holidays! :)

for the united states of america, 1945 to 1964 was a time of high economic growth and general prosperity. it was also a time of confrontation as the capitalist united states and its allies politically opposed the soviet union and other communist countries; the cold war had begun.

explanation:

yes.

explanation:

because it let the japanese know who had the upper hand in the war.