History -- Biography 2 Foreign relations -- 2 20th century 1 Aerial operations, American 1 African Americans -- 1 Afro American soldiers -- 1 more ... Afro-Americans -- 1 Air power -- 1 Armed forces -- 1 Biography -- 1 Civil War, 1998-1999 -- 1 Civil rights -- 1 Civil rights workers -- 1 Corporations, American -- 1 Economists -- 1 Energy consultants -- 1 Guided bombs 1 Guided missiles -- 1 History 1 History, military 1 Imperialism -- 1 Precision bombing -- 1 Race discrimination -- 1 Race relations 1 less ...