Answer:
1. nationalism is a belief where a nation's people believe that they, their goals, and their ideas are superior to other nations. In America, it was especially prominent during the early 1900s.
2. They were usually born and raised in the nation and gained a sense of pride towards it. A certain amount of them even held hatred towards immigrants and people that opposed their government. They came together because many saw them as a threat to personal opinions that were different from the government's.
Step-by-step explanation: