Famous African Americans. Help!?

There are so many to choose from. There is Daniel Hale Williams, who performed the first successful open heart surgery. There is Ida B. Wells, who did a lot of work exposing lynching in the South. Bessie Coleman, the first African American woman to get her pilot's license. Madame C.J. Walker, the first African American woman to become a millionaire (through the creation of hair care products for African American women). Garrett Morgan, who invented the traffic light and the gas mask. These are just a few of the many you can choose from.