what is annexation

Annexation is the process of forcibly acquiring and asserting legal title over one states territory by another state, usually following military occupation of the territory. It is a unilateral act where territory is seized and held by one state, as distinct from conquest and differs from cession, in which territory is given or sold through a treaty. Annexation can be legitimized if generally recognized by other states and international bodies. Annexation is frequently preceded by conquest and military occupation of the conquered territory. The formalities of annexation are not defined by international law; whether it be done by one authority or another within a state is a matter of constitutional law. In the context of cities, annexation is the process of bringing property into the city limits to provide urbanizing areas with municipal services and to exercise regulatory authority necessary to protect public health and safety.