Hi there! Hopefully this helps!
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The main factors that created rising tensions between European powers were;
- The enlargement of armies through militarism.
- The spread of nationalism through uprisings.
- The formulation of alliances through agreements.
- The spread of imperialism through conquests.
Pretty sure your answer is B. They didn't get equal rights until the 60's, I don't believe they were removed from jobs, and I'm fairly certain they wouldn't have done work without pay (The Great Migration is a good example of that).
The answer would be, B. there was a more prosperous economy.
Hope it helps.
The United States suppressed an uprising that sought to oust the military dictator of the Dominican Republic.