Nationalism as an ideology asserted itself in 19th century in Europe and America. Based on the principle of Nation state sovereignty, nationalism was developed in the context of independence movements, as a necessity to demand the departure of colonial powers. With the paradox that the territorial boundaries resulting from colonial heritage erased the geographic continuities that preceded it. Carried by anti-colonial struggles, this nationalism was conceived as strategic. Nevertheless, it often contributed to the interruption of revolutionary processes. In Marxist theory, nationalism is a phase of the revolutionary process, but it cannot be its finality because the revolution must abolish Nation state in order to create an international kind of organization.  Comprehensive movements such as Pan-Africanism, Pan-Americanism and Pan-Arabism were driven by this ambition.