noun
decolonization
Academic and political term for the process by which colonies become independent of the colonizing country.
第二次世界大戦後、多くの国で脱植民地化が進んだ。
After World War II, decolonization progressed in many countries.
脱植民地化の過程では、新たな国家が次々と誕生した。
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'.