| A | B |
| Lewis and Clark | men hired by Thomas Jefferson to explore the Louisiana Territory |
| Thomas Jefferson | President who bought the Louisiana Territory from the French |
| 1803 | Year the Louisiana Territory was purchased |
| New Orleans | The city that Jefferson wanted to control because it was at the mouth of the Mississippi River |
| Cherokee | tribe of Indians who were forced off of their land in Georgia and Alabama |
| Gold | what settlers had found on Cherokee lands |
| Trail of Tears | The event in 1839 in which Cherokee were forced to walk in the winter to Oklahoma |
| War of 1812 | War between the United States in Britain-started when U.S. sailors were captured by the British |
| Francis Scott Key | wrote "The Star Spangled Banner" during the war of 1812 |
| Napoleon | Leader of France when the Louisiana Territory was sold |
| $15 million | price paid for the Louisiana Territory |
| Sacagawea | Lewis and Clark's Native American guide |
| Independence, Missouri | the city where the Oregon and Santa Fe trails began |
| Santa Fe Trail | trail used mainly by traders between Missouri and New Mexico |
| Donner Party | group of pioneers that took a "shortcut" and got trapped in the mountains during a blizzard |
| Lansford W. Hastings | Lawyer who made maps and guides for pioneers including "The Emigrants Guide to Oregon and California" |
| Santa Anna | Mexican General who along with 6000 men attacked at the Alamo killing 90 Americans |
| Sam Houston | Led a surprise attack on Santa Anna, capturing him. Texas became an independent country. |