Why was Nationalism one of the main causes of World War I?
-It created the desire for self-determination among the diverse ethnic populations.
-It created unity among the European nations to resist attacks from Serbia.
-It inspired Germany and Austria-Hungary to join the Triple Entente.

The transcontinental railroad provided a means of fast transportation. it cut a 6 month trip into 6 days, created jobs for many people and encouraged immigration. the homestead act played a huge role in western expansion; it allowed settlers to begin a fresh start, and gave them land in exchange for their residence for up to five years and a small fee.