The correct answer is A. Northern cities had segregation laws.
While segregation was most commonly enforced by law in the southern states, some northern states like Illinois or Connecticut applied Jim Crow laws. Still, in the north de facto segregation was more noticeable than de iure, by law. Even after the derogation of "separate but equal" laws and the civil rights era, racial segregation is still an issue in northern cities, mainly through uneven economic development and discrimination.
