region a knowledge domain that you are interested in or are communicating about; "it was a limited realm of discourse"; "here we enter the region of opinion"; "the realm of the occult"
border district,
borderland,
marchland,
march district consisting of the area on either side of a border or boundary of a country or an area; "the Welsh marches between England and Wales"
congressional district a territorial division of a state; entitled to elect one member to the United States House of Representatives
development act of improving by expanding or enlarging or refining; "he congratulated them on their development of a plan to meet the emergency"; "they funded research and development"
enclave an enclosed territory that is culturally distinct from the foreign territory that surrounds it
palatinate a territory under the jurisdiction of a count palatine
jurisdiction in law; the territory within which power can be exercised
mandatory,
mandate the commission that is given to a government and its policies through an electoral victory
associated state,
protectorate a state or territory partly controlled by (but not a possession of) a stronger state but autonomous in internal affairs; protectorates are established by treaty
district -
To divide into administrative or other districts.
Wikipedia
Districts are a type of administrative division, in some countries managed by a local government. They vary greatly in size, spanning entire regions or counties, several municipalities, or subdivisions of municipalities.
