Roseanne A. Brown is an American author who writes books about history, culture, and identity. She is best known for her book, "We Are Not Alone: A History of Resilience and Resistance in the African Diaspora," which explores the African diaspora in the United States and its impact on African Americans. Her other works include "The Power of Black History: A Guide to Unlocking the African American Experience" and "The Color of Courage: The Untold Stories of African American Heroes." She is also a professor of history at the University of Maryland.