- Civil War.
- Cold War.
- Great Depression.
- Holocaust.
- Inventions & Science.
- Mexican-American War.
- Natural Disasters & Environment.
- Red Scare.
Then, how do I choose a history research topic?
1) Choose a general topic that interests you. You should start fairly broad, like “Civil War Battles” or “Women during the 19th Century.” Be prepared to narrow that topic down. Ultimately your paper will have a very narrow focus, but identifying an era or general topic that interests you is a good place to start.