On the morning of 12 February 1951 Kwame Nkrumah was freed from James Fort Prison in Accra. On the 14th he was invited by the Governor of the Gold Coast to form a government. He and his party, the Convention People's Party (CPP), remained in office through the transition to political independence on 6 March 1957, when the Gold Coast changed its name to Ghana, until the military revolution of 24 February 1966. This event formed the fifth of a series of army coups in Negro Africa which had begun on 25 November 1965 in the Congo, and it is probably the most important. Not only had Nkrumah held power for fifteen years, he was, for all the small size of his country, almost certainly the most influential politician south of the Sahara, and for what it was worth the only serious non-Muslim ideologist of the whole continent. Ghana had led the movement to African independence. So far as there was a common political creed its items and aspirations were Nkrumah's and the aspirations, however ineffective, to African unity, were based on his Pan-Africanism and not on the potentially alternative concept of négritude which had spread from the West Indies into French Africa's attitudes and politics.