Final answer:
De jure segregation is the name for separation by law. It refers to the legally enforced separation of two groups, typically based on race. An example of de jure segregation is the apartheid system in South Africa.
Step-by-step explanation:
De jure segregation refers to the separation of groups by law. It is important to distinguish de jure segregation from de facto segregation, which occurs without formal laws but due to other factors. An example of de jure segregation is the apartheid system in South Africa, where black South Africans were legally segregated from white South Africans. In the United States, de jure segregation occurred after the Civil War with the implementation of Jim Crow laws that mandated segregated facilities for blacks and whites.