How did world war i affect the great migration? a) african americans were no longer needed on farms in the south. b) african american workers abandoned factory jobs in the north for higher-paying agricultural jobs in the south. c) factory workers left their jobs to fight in the war, creating a labor shortage in urban areas.

 C

Explanation:

Since WWI created a labor sortage on factories in the northern states, african americans were encouraged to migrate to the North to make up for the workforce that had been recruited to fight in the war. Moreover, the wages for factory workers were higher than those for the agricultural sector, and the attitude towards african americans in the north was much more tolerant than that of the southern states, so they were further encouraged to leave the South.

a causal relation between two events exists if the occurrence of the first causes the other. the first event is called the cause and the second event is called the effect. a correlation between two variables does not imply causation.

explanation: