The correct option is B Colonisation of Asia and Africa increased.
Post the world wars, the European nations could no longer afford to hold the control over their colonies in Africa and Asia. The African and Asian countries fought against their respective European colonists like Britain, France, Japan, Italy, Germany and gained their independence. One of the prime reasons behind Indian independence was the weakening of Britain after the Second World War. By 1950, along with India, countries like Nigeria, Egypt, Indonesia, Vietnam and China became independent.