The answer is "region ".
In geography, regions are areas that are extensively separated by physical attributes, human effect qualities, and the collaboration of humankind and nature (ecological topography). Geographic regions and sub-districts are for the most part depicted by their loosely characterized, and now and again temporary limits, with the exception of in human topography, where ward territories, for example, national outskirts are characterized in law.
A region has its own particular nature that couldn't be moved. The principal nature is its indigenous habitat (landform, atmosphere, and so on.). The second nature is its physical components complex that were worked by individuals previously. The third nature is its socio-social setting that couldn't be supplanted by new immigrants.