IPA: /ˌdiːˌkɒlənaɪˈzeɪʃən/
KK: /dɪˌkɒlənaɪˈzeɪʃən/
The process of a colony gaining independence and becoming self-governing, often after being ruled by another country.
The decolonization of many African nations occurred in the mid-20th century.
Decolonization is formed from "de-" (meaning removal or reversal) and "colonization" (from Latin "colonia", meaning settlement). The term refers to the process of removing colonial influence or control, leading to the establishment of independent nations.
Think of 'removing' ('de-') colonial 'settlements' ('colonization') to remember that decolonization means the process of gaining independence from colonial rule.