During the three decades between the end of World War I and 1950, African and West Indian scholars, professionals, university students, artists, and political activists in London forged new conceptions of community, reshaped public debates about the nature and goals of British colonialism, and prepared the way for a revolutionary and self-consciously modern African culture. Black intellectuals formed organizations that became homes away from home and centers of cultural mixture and intellectual debate, and launched publications that served as new means of voicing social commentary and political dissent. These black associations developed within an atmosphere characterized by a variety of internationalisms, including pan-ethnic movements, feminism, communism, and the socialist internationalism ascendant within the British Left after World War I. The intellectual and political context of London and the types of sociability that these groups fostered gave rise to a range of black internationalist activity and new regional imaginaries in the form of a West Indian Federation and a United West Africa that shaped the goals of anticolonialism before 1950. This dissertation examines the black organizations and other social spaces that brought people of African descent together in London to illustrate how the city functioned, at once, as imperial metropolis and global city, as the administrative center of the British Empire and the nexus of black resistance to racism and imperialism.Ph.D.Includes bibliographical references (p. 471-480)