How did emigration to industrial jobs in the north during world war 1 affect the united states economy?

Question: How did emigration to industrial jobs in the north during world war 1 affect the United States economy?

Options:

The correct answer is:

Explanation: The Great Migration during WW1 was a change of homes for African American migrants from Southern farmlands to the urban cities of the industrialized North. Because of WW1, there was a shortage of labor in the northern factories. Millions of young men went to Europe to fight so factories and industries boomed and needed workers. Employers needed African-American workers to fill jobs so they would send agents to bring them North. African Americans were very hopeful and eager to leave their low-paying jobs in the rural South to go work in the North. It is estimated that between 300,000 and 500,000 migrated during this time.        

in his book, the riddle of the rosetta stone, james giblin talks about how there was a young british polymath and physician named thomas young who made a lot of advances on the deciphering of the rosetta stone. he says that even though young made a lot of mistakes because he was working under false assumptions, he also made huge contributions like deciphering three out of the seven symbols (more than anyone else before him). young published his findings and continued his good work but he wasn't able to progress much further due to some unfavorable situations, he still laid the basis for many other scholars and of course for the man who has been generally known to have deciphered it, jean-françois champollion

we can argue that appeasement caused world war ii because it allowed hitler and the nazis to build germany’s military power until it was strong enough to fight a major war. additionally, appeasement emboldened germany, making it think the allies would never have the will to fight. this made germany much more aggressive and encouraged it to take the steps that eventually led to war.