This biography of Marcus Garvey documents the forging of his remarkable vision of pan-Africanism and highlights his organizational skills in framing a response to the radical global popular upsurge following the First World War (1914–1918). Central to Garvey’s response was the development of organizations under the umbrella of the Universal Negro Improvement Association and African Communities League, which garnered the transnational support of several million members and sympathizers and challenged white supremacist practices and ideas.