What is the ku klux klan?
a. a racist political party founded after the civil war
b. a racist social club founded before the civil war
c. a racist terrorist group founded after the civil war
d. a racist labor union founded before the civil war

 C. A racist terrorist group founded after the Civil War.

Details:

The Ku Klux Klan began in 1866 in Tennessee as an organization of Confederate veterans of the Civil War.  They derived the name "Ku Klux" from the Greek word κύκλος (kuklos) , which means circle.  The group became a resistance movement against radical Reconstruction in the South, seeking to intimidate blacks and restore white supremacy.  The group carried out many acts of extreme violence, and acts in Congress and a decision by the Supreme Court (United States v. Harris, 1882) went against the Klan.  By that time, though, the Klan had mostly stopped operating because it had pretty much achieved its goal:  white dominance in the South.

A revived version of the Klan appeared again beginning in 1915, expanding its target beyond blacks to Jews and others.  At its height in the 1920s, this revived version of the Ku Klux Klan had more than 4 million members.  Today it is a fringe group in the US, with only a few thousand members.

it is the dominance of   the spanish language and roman catholic region in mexico, french being the official language of several african countries, and the existence of a western-style government in south asian countries

after the civil war, and with the termination of slavery, the south was faced with a big problem; what was supposed to happen and how they were supposed to deal with the freedom and the rights that black people and freed slaves had gained as a result of the north defeating the south and forcing the end of slavery. first, most, if not all, of the workforce of the south came from slaves and they did not have an option to replace the loss of said workforce. second, particularly in the south, people were convinced that black people were lesser, less intelligent, less capable and less smart than whites. this posed a huge problem for them. also, southerners were faced with another issue; freed slaves now had a say in how their lives would be lived and the right to politically choose the way they would be governed. people in the south did not want to accept this, none of this and this opposition and the conflicts that arose from it, not to mention the afereffects of the war, forced the congress of the time to enact and enforce the reconstruction plans that had been proposed by president andrew johnson.