Final answer:
The outcome of the 1900 race riot involving the killing of a white policeman by a black person led to increased segregation in the North, not improved job opportunities or race relations.
Step-by-step explanation:
The correct answer is c. Increased segregation in the North. The killing of a white policeman by a black person in the 1900 race riot did not lead to better opportunities or improved relations, but rather an intensification of segregation and racial tensions. In the historical context of early 20th century America, African Americans faced increasing segregation and discrimination, particularly during the period known as the Great Migration when many moved to northern cities.
Even though legal segregation was not as pronounced in the North as in the South, de facto discrimination was evident in segregated schools, neighborhoods, and employment. Race riots, such as the Springfield Riot and the Chicago Race Riot of 1919, were sparked by racial tensions and resentment over job competition, leading to violent clashes and the further marginalization of African Americans in the North.