| Term | Definition |
| Cultural Diffusion | The spreading, mixing, and changing of cultures |
| Immigrants | People who settle in a country 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 and danger. |
| Urbanization | the movement to cities, growth of cities |
| Urban area | cities and towns |
| Rural area | " in the country" often farms |
| Push Factors | things that make you move for your survival |
| Pull Factors | opportunities for a better life that encourage you to move |