A, segregation was widespread in america
C, again segregation
D, blacks were not able to vote easily as whites
The last one the route increased contact with foreign countries
Answer:
Its B because it was clearly written at the time that it was happening.
Historians describe white Southerners' varied responses to emancipation and the issue of civil rights, and describe the thinking that gave rise to white supremacist groups like the Ku Klux Klan during Reconstruction.