Narrowest point of land along Central America and the bodies of water helped as well
Panama Canal
War and the space race
Stronger rails allowed heavier goods to be shipped from one point to another. Larger trains allowed more load to be moved thus allowing an increase in what "people could be moved" If you have any other questions feel free to ask!
1. Energy shortage, high inflation, and high unemployment.
2. Worldwide oil shortage
Sorry but I’m not sure what 3 is.
Answer:
When the United States finally emerged from the Great Depression during World War II, it had hundreds of new roads and public buildings, widespread electrical power, and replenished resources for industry.
Explanation:
