| A | B |
| assimilation | becoming similar or alike something; becoming more "American" |
| transcontinental railroad | Railway built across the continent |
| Panama Canal | Shortcut through Atlantic Ocean |
| Yellow Journalism | Exaggeration of facts that contributed to the Spanish American War |
| Pure Food & Drug Act | Laws regulation food and medicine industries |
| Zimmerman Telegram/Unrestricted Submarine | Reasons for US entry into World War I |
| Used in World War I | tanks, trenches, machine guns, gas, gas masks |
| 19th Amendment | Women's Suffrage |
| Flappers | Modern Women in the 1920s |
| Assembly Line | Way to manufacture goods using interchangeable parts, the Model T |
| 1929 | Stock Market Crash |
| New Deal | FD Roosevelt's plan to get USA back to work |