👉 A megapolis is a city or town that has grown to be so large and populous that it can no longer accommodate its own residents, but instead attracts residents from nearby towns, villages, or other cities. This phenomenon typically occurs as a result of urban sprawl, where the population density in an area exceeds the carrying capacity of the land available for human habitation. In terms of size, megapolitical regions are often defined by their population density, which can reach millions to billions, making
