Which supreme court ruling caused schools to start integrating in the 1950s?

The supreme court ruling that caused schools that starts integrating in the late 1950's is Brown V. Board of Education, before this case, many public school that separates the black and white and after it, it was marked to be unconstitutional. I hope you are satisfied with my answer and feel free to ask for more

Abraham lincoln gave his 2nd inaugural address on march 4, 1865.-as lincoln prepared to speak, the civil war was drawing to a close.