| Term | Definition |
| reasons-1-a | Americans lived in Texas |
| reasons-2-a | Americans supported fight for Texan independence |
| reasons-3-a | 91% of Texans wanted to be this |
| reasons-4-a | President Tyler supported annexation |
| reasons-5-a | James K. Polk supported annexation |
| reasons-6-a | this will help to fulfill the US' Manifest Destiny |
| reasons-1-N.d | Texas had slavery, many didn't want another slave state |
| reasons-2-N.d | adding Texas would upset the balance of free states to slaved states |
| reasons-3-N.d | Mexico never recognized Texas as independent, so still regarded Texas as Mexican territory |
| reasons-4-N.d | this will probably lead to war with Mexico, thought many |
| General John C. Fremont | began uprising in California |
| Treaty of Guadalupe Hidalgo | ended the war with Mexico, Rio Grande River becomes border of Texas, Mexico ceded California and New Mexico Territory for $15 million (Mexican Cession) |