Answer:
The first steps toward official segregation came in the form of “Black Codes.” These were laws passed throughout the South starting around 1865, that dictated most aspects of black peoples’ lives, including where they could work and live. The codes also ensured black people’s availability for cheap labor after slavery was abolished.
In 1896, the Supreme Court ruled in Plessy v. Ferguson that segregation was constitutional. The ruling established the idea of “separate but equal.” The case involved a mixed-race man who was forced to sit in the black-designated train car under Louisiana’s Separate Car Act.
As part of the segregation movement, some cities instituted zoning laws that prohibited black families from moving into white-dominant blocks. In 1917, as part of Buchanan v. Warley, the Supreme Court found such zoning to be unconstitutional because it interfered with property rights of owners.
The Public Works Administration’s efforts to build housing for people displaced during the Great Depression focused on homes for white families in white communities. Only a small portion of houses was built for black families, and those were limited to segregated black communities.
Segregation of children in public schools was struck down by the Supreme Court as unconstitutional in 1954 with Brown v. Board of Education. The case was originally filed in Topeka, Kansas after seven-year-old Linda Brown was rejected from the all-white schools there.