Which organizations evolved during reconstruction to intimidate black voters and republicans and prevent them from participating in politics?

the answer is: the ku klux klan, the white line, the knights of the white camellia and the white brotherhood. these were all groups that were born during the period of reconstruction, and continued acting afterwards, and in a sense made the whole purpose of reconstruction, to fail.

explanation:

after the civil war, and especially after the ratification of the first civil rights act of 1866, all slaves who had been freed, supported by radical republicans in the south, began to forge forth a new life for all african americans. however, the opposition by white people in the south was pretty fierce and intense. around the 1860´s, this intensity and fierceness reached a whole new level, first with the appearance of the ku klux klan in 1866, in tennessee, and then the formation of other such white supremacist vigilante groups who believed that african americans were only good for two things: be slaves, or be dead. as such, they inflicted a lot of terror and damage not only on freed slaves who dared to try and settle in the south, but also the republicans who supported them and protected them.

sorry i really dont know

i think the answer is a and i hope this ; ))