What is an example of de facto segregation?

During racial integration efforts in schools during the 1960's, “de facto segregation” was a term used to describe a situation in which legislation did not overtly segregate students by race, but nevertheless school segregation continued.

answer; i believe the correct answer is (federalist);

the secretary of state, appointed by the president with the advice and consent of the senate, is the president's chief foreign affairs adviser. the secretary carries out the president's foreign policies through the state department and the foreign service of the united states.