Respuesta :

The trend shown in the graph was caused by the increase in economic opportunities to work in factories during WWII, as shown in the image.

How did WWII influence immigration?

  • The number of male Americans enlisted in the army created job vacancies.
  • During the war, commerce and industry had to continue to function.

As the factories and businesses were left with a low number of workers, it was necessary to draw the attention of foreigners to fill these vacancies and keep American production active.

The graph to which the question refers is in the attached image.

Learn more about immigration at the link:

https://brainly.com/question/13688875

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Answer: economic opportunities to work in factories

Explanation: