Which term refers to the entrance of a new population into an already occupied area?

The term that describes the entrance of a new population into an already occupied area is "Invasion." In the context of urban studies and sociology, invasion occurs when a group of people moves into an area that is already occupied by another demographic. This can lead to significant changes in the social, economic, and physical landscape of the area.

Invasion is often studied in relation to urban dynamics, particularly in how it affects housing markets, community identity, and demographic shifts. This process might introduce new cultural practices, economic activities, or political dynamics to the area, which can result in various social outcomes, including tension or conflict between the existing population and newcomers.

The other terms present distinct concepts related to urban development and change. Gentrification refers more specifically to the process involving the transformation of urban neighborhoods through the influx of more affluent residents, which often displaces lower-income populations. Block-boosting involves practices that encourage certain population groups to move into specific areas, often related to real estate strategies that exploit demographic trends. Rehabilitation refers to the renovation and improvement of structures or areas, typically for maintenance or enhancement, without the specific emphasis on population change. Understanding these differences helps clarify the unique implications of each process in urban studies.