PT 61 S1 Q22

   In contrast to the mainstream of U.S. historiography ... ...

Which one of the following is most strongly supported by the passage?
(A) Emigrationist sentiment would not have been as strong among African Americans in the late nineteenth century had the promise of U.S. citizenship been fully realized for African Americans at that time.
(B) ...
(C) ...
(D) ...
(E) ...

*This question is included in RC Oct '10 LSAT (PT 61 - Sec 1)