The Underground Railroad was a decentralized network of White abolitionists, free Blacks, former slaves, Mexicans, Native Americans, and others opposing slavery in the United States who established secret routes and havens to help slaves escape bondage. The system operated between circa 1780 and 1865, when slavery was abolished by the 13th Amendment.
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Timeline
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c. 1780 - 1865The Underground Railroad is in operation, freeing slaves and directing them toward freedom.