| Answer | Crossword Clue |
|---|---|
| USONE | Longest north-south highway in America |
| NORTE | North, in South America. |
| OPEC | Intl. group with two South American members and none in North America |
| USONE | Longest American north-south rte. |
| PLIOCENE | Epoch when the landmasses of North and South America joined |
