The major cause of shifts in political allegiance during this time came from the Great Depression, which required strong government intervention to correct the issue. These interventions became commonly ascociated with the Democratic Party, thanks to FDR.
Factories located near bodies of water because it allowed them to be powered by the water. Factory work was very important for people, as many of them moved near the factories. As more and more people came, the cities urbanized.
Montana, was not colonized by the Spanish.
2 million United states troops were in europe. 50,000 dead.