| Term | Definition |
| Progressive movement | Corrected political corruption, poverty, disease, illiteracy |
| Trust | Combination of firms that control all or most all the business in an industry |
| Temperance movement | Tried to convince people to not drink alcohol |
| Referendum | A vote by the people, such as on prohibition |
| Bootlegging | People who carried illegal whiskey in their boats |
| Feminist | Person who believes in equal rights for women |
| Secret ballot | When people vote but do not let others see how they vote |
| Demagogue | Person who stirs up the people with speeches |
| Diplomats | Trained to handle sensitive situations between countries |
| Isolationists | Wanted to stay out of world affairs, other countries |
| Interventionists | Wanted to be part of the world community |
| Racism | Belief that one race is superior to others (Nazis) |
| Xenophobia | Fear of immigrants, "foreigners" |