| A | B |
|---|
| westward expansion | The settlement of the North American continent from the Atlantic coast to the Pacific coast |
| territory | A geographical area owned by a government |
| pioneer | Someone who went to an area before it was settled |
| frontier | A place at the edge of settled land |
| keelboat | A large, flat-bottomed boat used for travel on rivers |
| expedition | A long march or journey taken for a specific purpose |
| treaty | A legal agreement between two governments or countries |
| reservation | An area of land where the U.S. government forced the American Indians to live |
| prairie schooner | Another word for a covered wagon, so called because they looked like ships sailing across a sea of grass. |
| Louisiana Purchase | The sale of a large piece of land west of the Mississippi River. |
