Answer:
The main contribution was the stock market crash of 1929 that made the United States fall into the Great Depression.
Congress has a hard time overriding presidential vetoes because it is hard to get two thirds of a vote from both sides.
The Union won the war because:
1) There factories were built up; the South was mostly farms
2) They had the support of African slaves located in the South
3) They had larger armies
4) They had a more built up navy
5) They were able to deprive the South of their economy and allies
hope this helps
D. What Is Your Opinion About The Presidents Decision To Send Troops Into Iraq?
Answer:
Hey Honey!!
The Conservative party, and the Labour party.
I hope I helped!