| A | B |
|---|
| nomad | a person who moves from place to place |
| migrate | to move from one plae to another |
| land bridge | a narrow strip of land that connects two larger pieces of land |
| isthmus | connects two larger pieces of land |
| strait | a narrow waterway connecting two larger bodies of water |
| Bering Strait | Narrow body of water connecting the Arctic and Pacific Oceans, separating Asia and North America |
| adapt | to change to fit to a new situation |
| civilization | presence of cities,trade, government, art, writing and science |
| barter system | people buy and sell goods by exchanging one item for another |
| artifact | object left by people who lived long ago |
| causeway | a raised roadway across a body of water |
| empire | many different lands brought under the rule of one government |
| ancestor | a person from whom a family or group descends |
| cavalry | soldiers who fight on horseback |
| Latin America | cultural region south of U.S., includes Mex., Cent. America , islands of West Indies and all of South America |
| Middle America | Mexcio and countries of Central America |
| Central America | 7 countries between Mexico and South Ameria |
