| A | B |
| mountain men | a fur trapper or explorer who discovered trails through the Rocky Mountains |
| Jedediah Smith | a famous Mountain man |
| Jim Beckwourth | a famous mountain man who discovered a mountain pass that took people into northern California. |
| land speculator | a person who buys land in the hope that it will increase in value and bring in a profit. |
| Sata Fe Trail | a trail that went from Missouri to Santa Fe,New Mexico. |
| Oregon Trail | a trail from Missouri to the Oregon Territory |
| Mormon | a member of the Church of Jesus Christ of Latter-Day Saints |
| Brigham Young | a Mormon leader who led a settlement into Salt Lake City,Utah |
| Tejano | a person of Spanish heritage who considers Texas his or her home state |
| Santa Anna | the president of Mexico |
| Sam Houston | first president of the Republic of Texas |
| William Travis | army leader at the Battle of the Alamo |
| Juan Seguin | Tejano leader at the Battle of the Alamo |
| Battle of the Alamo | an important battle for the independence of Texas from Mexico |
| Lone Star Republic | the nickname of the Texas Republic |
| manifest destiny | the belief that the United States would expand across the continent |
| James K.Polk | the eleventh president of the United States during whose term the United States added a lot of territory |
| Zachary Taylor | U.S.general who defeated Santa Anna at the Battle of Buena Vista |
| Bear Flag Revolt | a rebellion by Americans against Mexican rule in California |
| Winfield Scott | U.S.generalwho led the american army in the capture of Mexico City |
| Treaty of Guadalupe Hidalgo | an agreement between the U.S.and Mexico that ended the Mexican War |
| Mexican Cession | a large region given up by Mexico to the U.S.after the Mexican War |
| forty-niner | a person who went to California to find gold,starting in 1849 |
| Californio | a California settler of Spanish or Mexican descent |
| Mariano Vallejo | a Californio and a member of one of the oldest Spanish families in America |
| John Sutter | a California settler on whose land gold was found |
| James Marshall | a carpenter who found gold at Sutter's Mill |
| California Gold Rush | an event that took place whenlarge numbers of people moved to California to find gold,starting in 1849 |