| A | B |
|---|
| Atlantic Ocean | served as the highway for explorers, early settlers, and later immigrants |
| Ohio River | gateway to the west |
| Great Lakes | inland port cities crew in the Midwest along these |
| Mississippi and Missouri Rivers | trahsportation arteries for farm and industrial products; were links to ports and to other parts of the world |
| Columbia River | explored by Lewis and Clark |
| Atlantic and Pacific Oceans | provided access to other countries of world |
| Colorado River | explored by the Spanish; means "discolored" |
| Rio Grande | forms the border with Mexico |
| Pacific Ocean | was an early exploration route |
| Gulf of Mexico | provided the Friench and Spanish with exploration routes to Mexico and other parts of America |
| Hudson Bay | wraps around Canadian Shield |
| HOMES | mneumonic for remembering Great Lakes |
