What did the free african americans and whites who opposed slavery set up to runaways escape?

They set up underground railroads.

Harriet Tubman has become the most famous conductor of the Underground Railroad. She led more than 300 people from slavery to freedom in the mid-1800.

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explanation:

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roosevelt believed that in light of the country's recent military successes, it was unnecessary to use force to achieve foreign policy goals, so long as the military could threaten force. this belief, and his strategy of “speaking softly and carrying a big stick,” shaped much of roosevelt's foreign policy.