Cameroon became a new country with untried political institutions, largely an inheritance from the French Gaullist experience. In politics, Cameroon has become famous for its political stability and for its peaceful and constitutional change of head of state and government. Cameroon, as a political unit, was created in the 1880s. The German period was of great importance to Cameroon. The British and French invasion of Kamerun during First World War brought an end to German rule. The colony was divided between the victorious powers, the larger share of land and population going to the French, the smaller to the British. Large-scale internal population migrations, begun in the German period, were complicated by the movement of thousands of Nigerians, mainly Ibos and Efik-Ibibio, into the coastal part of Southern British Cameroons. The Cameroon independence movement was unusual in that a large amount of violence, indeed, a war of liberation, was involved.