Which was true of race relations in the north a. northern cities had segregation laws b. northern cities were segregated by customers, not by law c. segregation did not happen in the north. d. northern cities had integrated school systems.

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.

B. Northern cities were segregated by customs, not by law

Explanation:

(APEX)

a. by accepting the election of president abraham lincoln in 1860 and convincing other southern states to do the same

answer; (c) slaves brought to the americans from africa;