Decolonization was shaped by the need to align with either the United Sated or the Soviet Union. Decolonization is defined as the reverse of colonization. It is the process by which colonies become independent. This usually happens as a political process, and in some cases, it is preceded by a war of independence.
Decolonization became very popular in the 20th century. Before colonization became popular among nations, most countries were ruled from Europe. After the Second World War, European nations lacked the power, political support, and wealth needed to maintain these colonies. Opposition from the United States and the Soviet Union shaped decolonization.