decolonization
Academic and political term for the process by which colonies become independent of the colonizing country.
After World War II, decolonization progressed in many countries.
In the process of decolonization, new nations were born one after another.
Compound of 脱 (だつ, 'de-', 'removal') + 植民地 (しょくみんち, 'colony') + 化 (か, '-ization'). A modern calque from English 'decolonization'.