reannex

Example:The government decided to disannex the southern region, granting it a more significant level of autonomy.

Definition:To separate (an area or territory) from a larger unit and make independent or less directly dependent; to disengage from a larger political or geographic entity.

Example:The country underwent a process of decolonization, ensuring the people had full control of their own affairs and future.

Definition:To rid a country or territory of foreign control, especially the gradual removal of the pre-existing structure of colonial rule through the establishment of self-government, and the restoration of the country to sovereignty.