Africa is the second-largest continent on Earth, covering about 30.

The Wikipedia page on African Americans provides an extensive overview of the history, culture, and achievements of African Americans in the United States.

Horace Julian Bond (January 14, 1940 - August 15, 2015) was an American social activist, leader of the civil rights movement, politician, professor, and writer.

Martin Luther King Jr.

Maya Angelou was an American poet, memoirist, singer, and civil rights activist.

The National Association for the Advancement of Colored People (NAACP) is a major civil rights organization based in the United States.

The Wikipedia page on the United States provides a comprehensive overview of the country.