| A | B |
| William Becknell | Pioneered the Santa Fe Trail |
| Forty-niners | Rushed to California in search of gold |
| Marcus Whitman | Worked with Native Americans in Oregon |
| John Fremont | Led the rebels against Mexican rule for independence |
| John Sutter | Gold was found at his mill in 1848 |
| Mountain Men | Searched for furs in the West |
| Gadsden Purchase | In 1853 this cost the U.S. $10 million |
| Independence, Missouri | Starting place for families heading west to Oregon |
| Mormons | Brigham Young led this group to Utah |
| Missionaries | First white settlers to build permanent homes in Oregon |
| Santa Fe Trail | Route to New Mexico |
| Mexican Cession | Land ceded to the U.S. due to the Guadalupe Hidalgo Treaty |
| Boom town | Fast growing area due to the Gold Rush |
| Mexico | Republic of Texas won its independence from this country |
| U.S. should expand to the Pacific | Idea behind Manifest Destiny |
| "Remember the Alamo" | Battle cry of Texas in 1836 when fighting Mexican armies |
| Texas | Lone Star Republic |
| Add territory to an existing country | Annex |
| Stephen Austin | Led settlers from the U.S. into Texas |
| Santa Anna | Attacked the Alamo |
| Sam Houston | Commanded the army of the Republic of Texas |
| Joseph Smith | Founder of the Church of Jesus Christ of Latter Day Saints |
| Narcissa Whitman | One of the first missionaries to reach Oregon |
| California | Bear Flag Republic |
| California | U.S. gained control of this area as a result of the Mexican War |
| Cede | Give up land |
| Management of water | A reason for Mormon success in Utah |
| Isolation | Reason Brigham Young chose the Great Salt Lake area for settlement |
| Good land for growing cotton and raising cattle | Reasons for people to move to Texas |
| Hoped Americans would develop the land | Mexico encouraged Americans to settle Texas |
| Sam Houston elected president of the Lone Star Republic | Then, the U.S. annexed Texas |
| Treaty of Guadalupe Hidalgo | Then, the U.S. stretched to the Pacific Ocean |
| Mexian War begins | Then, Texas is admitted to the Union |
| Britain and the U.S. divide Oregon at 49 degrees north latitude | Then, James Polk elected President of the U.S. |
| Spanish build missions in California | Then, Fremont establishes the Bear Flag Republic |
| Texans practiced slavery | Reason the Northerners opposed annexing Texas |
| U.S. and Mexico | Manifest Destiny led to a conflict between these nations |
| Effect of the Gold Rush | Destruction of the California Indians |
| Americans felt no loyalty to Mexico | Reason Mexico stopped allowing Americans to settle in Texas |