Pan-Africanism is a worldwide movement that aims to encourage and strengthen bonds of solidarity between all indigenous peoples and diasporas of African ancestry. Based on a common goal dating back to the Atlantic slave trade, the movement extends beyond continental Africans with a substantial support base among the African diaspora in the Americas and Europe.

The back-to-Africa movement was a political movement in the 19th and 20th centuries advocating for a return of the descendants of African American slaves to the African continent. The movement originated from a widespread belief among some European Americans in the 18th and 19th century United States that African Americans would want to return to the continent of Africa. In general, the political movement was an overwhelming failure; very few former slaves wanted to move to Africa. The small number of freed slaves who did settle in Africa—some under duress—initially faced brutal conditions, due to diseases to which they no longer had biological resistance. As the failure became known in the United States in the 1820s, it spawned and energized the radical abolitionist movement. In the 20th century, the Jamaican political activist and black nationalist Marcus Garvey, members of the Rastafari movement, and other African Americans supported the concept, but few actually left the United States.