| Term | Definition |
| cultural diffusion | the spreading, mixing, and changing of cultures. |
| immigrants | people who settle in a place they weren't born in. |
| Ellis Island | Immigration processing center that open in New York Harbor in 1892 |
| Undocumented Workers | immigrants who come into the country without the government's permission. |
| Migration | large-scale permanent movements of people. |
| refugees | people who flee their country because of persecution or danger |
| urbanization | the movement to cities, growth of cities. |
| urban area | cities and towns |
| rural area | "in the country" often farms. |
| push factor | things that make you move for your survival. |
| pull factor | opportunities for a better life that encourage you to move. |