| A | B |
| Expansion | was the process of adding land to the United States |
| Horace Greeley | "Go west Young man!" |
| Oregon Trail | One of several routes used to go west. |
| Indian Attacks | Were not a major cause of death on the route west. |
| Donner | Led a group west that became trapped! |
| Mormons | Christian Church in Utah. |
| Bringham Young | One of the leaders of the Mormans. |
| Salt Lake City | Place in Utah where the Mormans settled. |
| Texas | Was its own country for a while. |
| John Tyler | Was the President that added Texas to the United States. |
| 1845 | The year Texas was added to the United States. |
| James K. Polk | Person who ran for President to land more to the US |
| 54, 40 Fight | Northern most border that was claimed by the US. |
| Zachary Taylor | General who tried to build a fort in the disputed area in Texas. |
| 1846 | United States declared war on Mexico. |
| Monterrey | This was a Zachary Taylor victory over Mexican War. |
| Pro Slavery Conspiracy | Why some people thought we went to war with Mexico. |
| Treaty of Guadeloupe Hidalgo | This ended the war between Mexico and the United States. |
| Forty-Niners | People who went west to find gold. |
| James Marshall | Man who found gold in California! |
| Sutters Mill | Where James Marshall found gold in California. |