Answer:
Modern racially segregated neighborhoods in the United States
Step-by-step explanation:
De facto segregation is a kind of racial segregation that happens by fact rather than through law requirements. In the 1960s when schools when efforts were being made for racial integration in schools, de facto segregation was a term used in situation where students were not segregated by their race by the law.
Modern racially segregated neighborhoods in the United States had nothing to do with the law.