| A | B |
| Daniel Boone | one of the first American settlers to cross the Appalachian Mountains |
| Thomas Jefferson | 3rd president of the United States |
| Napoleon Bonaparte | sold all of Louisiana to the United States because France needed money to fight Britain |
| Meriwether Lewis | hired by Thomas Jefferson to explore the Louisiana Purchase land |
| William Clark | also explored the Louisiana Purchase land |
| Sacagawea | hired by Lewis & Clark to quide them through the Shoshone land |
| Davy Crockett | fought at the Alamo |
| Jim Bowie | fought at the Alamo |
| Brigham Young | a Mormon leader who led a group from Illinois to Utah |
| Alamo | a mission in San Antonio, Texas, that was used as a fort during the Texas War |
| Cumberland Gap | a point where the present-day states of Tennessee, Kentucky, and Virginia meet |
| Pikes Peak | a "blue mountain" in Colorado |
| Lake Erie | where the battle was won to help the United States keep control of the western lands |
| Peter Cooper | built the first American locomotive called the 'Tom Thumb' |
| Robert Fulton | used a steam engine to power his boat, the Clermont |
| Eli Whitney | invented the cotton gin |
| Cyrus McCormick | invented a mechanical reaper for harvesting grain |
| John Deere | invented a strong steel plow to cut through the heavy soil in the Midwest |
| Samuel Morse | invented the telegraph, a faster way to send messages |
| Louisiana Purchase | a region of land that doubled the size of the United States |