Which organization did african-americans form throughout the south during reconstruction? a. union leagues b. league of women voters c. democratic party d. ku klux klan

A. Union Leagues
Proccess of elimination.
 
  B is talking about Women Voters and Suffrage didn't really get its start until the Suffrage Movement which occured during the Progressive Era which is after Reconstruction. So you can eliminate B. C can also be eliminated the Democratic was already established in 1828 and Reconstruction occured after the Civil War during the 1860s.

  So that leaves A and C. So as you may know the Klu Klux Klan was against African Americans so it wouldn't be reasonable to say that African Americans helped form the Klux Klan.Thus the correct answer should be A.