"<span>C. It had thin stone walls supported on the outside by flying buttresses" does not</span> apply to Gothic architecture, since the walls were often very thick.
Answer:
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.