OPEC was protesting because the U.S. was supporting the Israeli military leader during the Yom Kippur War.
The best statement to complete the diagram is that African Americans migrated to obtain jobs in northern factories.
<h3>Why were African Americans able to get jobs?</h3>
WWI had drained the nation of the manpower needed to sustain industrial production. This manpower however, had mostly been White people.
With them being in shortage on account of joining the army, African Americans were able to take their place and moved to the North to work in factories.
In conclusion, option B is correct.
Find out more on labor shortage in WWI at brainly.com/question/404503.
The main purpose of the National Association for the Advancement of Colored People is to make sure that the rights of colored people will be provided - whether it's educational, economic, political and social. This is all for the sake eliminating racial discrimination.