The Era of Good Feelings.
Transcontinental Railroads, (brainliest would be awesome) :)
Answer:
More food
Explanation:
When people have more food they can have more children without fear of starvation, and with an agricultural revolution, the town needs more people to help harvest.
Answer:
The main opponents in World War II were the Axis Powers. The United States entered the war on the side of the Allies after the bombing of Pearl Harbor by Japan in 1941.
Hope this answers it :)