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Underground railroad
(https://www.ducksters.com/history/civil_war/underground_railroad.php) African american slaves escaped Harriet Tubman was the founder of the underground railroad but the name "underground railroad" where the name came from is unknown, but she made the railroad for slaves to escape and be freed. Harriet Tubman was a slave and also had to use it herself,then came back for others. she set about 30,000 African american slaves free