The United Nations has played a significant role in Black history by addressing issues of racial discrimination, promoting human rights, and advancing global development initiatives that benefit people of African descent worldwide. One of the most important milestones in the UN's involvement in Black history is the adoption of the Universal Declaration of Human Rights in 1948, which affirmed the fundamental rights and freedoms of all individuals, regardless of race or ethnicity.

The United Nations has also been instrumental in supporting the decolonization process in Africa and advocating for the rights of African nations to self-determination and independence. The UN's Special Committee Against Apartheid played a crucial role in supporting the anti-apartheid movement in South Africa and mobilizing international pressure to end the oppressive system of racial segregation in the country.

In addition, the UN has established various mechanisms to address racial discrimination and promote racial equality, including the Committee on the Elimination of Racial Discrimination and the International Decade for People of African Descent. These initiatives aim to combat racism, xenophobia, and related forms of intolerance, and to promote the rights and well-being of people of African descent around the world.

Overall, the United Nations has been a key actor in advancing the cause of racial justice and equality, and its efforts have helped to raise awareness of the challenges faced by Black communities and to promote positive change on a global scale.