| __ | 1. | buffalo | | A. | rich, lush grasslands of the Great Plains |
| __ | 2. | expedition | | B. | wild cattle that populated the plains until the 19th century |
| __ | 3. | explorer | | C. | a member of any of the native peoples |
| __ | 4. | journals | | D. | American explorers and leaders of the Corps of Discovery |
| __ | 5. | Lewis and Clark | | E. | area purchased from France that expanded the U.S. |
| __ | 6. | Louisiana Purchase | | F. | books containing notes, information, and written records |
| __ | 7. | Native American | | G. | 3rd president of the U.S. |
| __ | 8. | prairies | | H. | a journey or trip undertaken for a specific purpose |
| __ | 9. | Sacagawea | | I. | a person who travels in search of new information |
| __ | 10. | Thomas Jefferson | | J. | Shoshone Native American guide for Lewis and Clark |