Why were the jim crow laws enacted?

To enforce segregation among whites and blacks.

More Information To support this is:

They were laws designed to enforce segregation of blacks from whites, Jim Crow laws were state and local laws passed from the end of Reconstruction in 1877 through the mid-1950s by which white southerners reasserted their dominance by denying African Americans basic social, economic, and civil rights, such as the right to vote.

Hope I helped.

they were treated very badly. they were targeted by white supremacists and other groups, like the klu klux klan, even after coming back to the country as veterans. they were seen as inferior and gave the african americans new found motivation to fight against this racial injustice. 

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