Hi there! I actually wouldn't say D. Especially before the 1920's the Ku Klux Klan were doing these things to many African Americans, and, although they were based more in the South, it wouldn't be accurate to say that it ALL happened there. I'd go for C, because, WHAT African American leaders? Until the 1920's, and the start of the jazz craze, black people were unable to get higher jobs- even way after the 1920's it was extremely rare. Hope this helped ;)
Congress's power to override the President's veto forms a “balance” between the branches on the lawmaking power. ... Congress can override a veto by passing the act by a two-thirds vote in both the House and the Senate. (Usually an act is passed with a simple majority.)