Before the states became states they were called colonies. The reason why they were called colonies was because that they were all colonies of Great Britain. They began being called states in July 1776.
<span>Reactive is the answer you are looking </span>
I only know a few, but I'll give you the answers to the ones I know:
2-Nationalism
4-I'm not sure, but I think it's the Great War
8-Pearl Harbor
Sorry I couldn't help you with the rest!!