Decolonization: Decolonization refers to the process by which colonies gain independence from their colonial rulers and establish their own self-governance.
Mandate System: The mandate system was a post-WWI arrangement where certain territories were placed under temporary control of European powers with the aim of preparing them for eventual self-rule.
Nationalism: Nationalism is an ideology that emphasizes loyalty and devotion to one's own nation, often seeking self-determination and independence from foreign rule.