Sweet home chicago: the promised land, discuss which changes in technology, society, and world events were most significant and essential in setting the stage for the great migration of african americans to the north. which factors were essential to this migration?

The new conditions that arise due to the World War 1 led to a scarcity of labor in the north. Though women tried to fill up the empty spaces but still there was ample vacant space. The new job opportunities attracted thousands of black Americans to move north. Secondly, blacks saw an escaping route in the north where they could expect better living conditions and less racial segregation.

answer; /// i believe that the correct answer is (d)the huang he river valley;