decolonization
noun [ U ] (UK usually decolonisation) uk/diːˌkɒl.ə.naɪˈzeɪ.ʃən/ us/diːˌkɑː.lə.nəˈzeɪ.ʃən/
非殖民地化;（殖民地）独立
the process in which a country that was previously a colony (= controlled by another country) becomes politically independent