| A | B |
| Louisiana Purchase | Through this purchase, Jefferson doubled the size of the U.S. in 1803. |
| Trail of Tears | In 1838, many Cherokees were forced to march from Georgia to Indian Territory. |
| Manifest Destiny | A belief that the U.S. was destined to stretch or expand from coast to coast. |
| Treaty of Guadalupe Hidalgo | This treaty between the U.S. and Mexico resulted in the Mexicans ceding the Southwest to the U.S. |
| Oregon Trail | A pioneer road that stretched from Independence, Missouri to Oregon City, Oregon. |
| Texas Revolution | This began as a rebellion against the Mexican government and established the Republic of Texas. |
| The Grange | This alliance helped farmers to organize, set up cooperative, and sponsored railroad legislation. |
| Populism | A political movement seeking to advance the interests of farmers and laborers in the late 1800s. |
| Gold bugs | These were supporters of the continued use of the gold standard and stable money. |
| Silverites | These were supporters of the use of silver (bimetallism) and gold to back paper currency. |