African nationalism is an umbrella term which refers to a group of political ideologies in sub-Saharan Africa, which are based on the idea of national self-determination and the creation of nation states. The ideology emerged under European colonial rule during the 19th and 20th centuries and was loosely inspired by nationalist ideas from Europe. Originally, African nationalism was based on demands for self-determination and played an important role in forcing the process of decolonisation of Africa (c. 1957–66). However, the term refers to a broad range of different ideological and political movements and should not be confused with Pan-Africanism which may seek the federation of several or all nation states in Africa.