Answer:
The Underground Railroad was a network of secret routes and safe houses established in the United States during the early to mid-19th century, and used by enslaved African-Americans to escape into free states and Canada. The scheme was assisted by abolitionists and others sympathetic to the cause of the escapees. People known as “conductors” guided the fugitive slaves. Hiding places included private homes, churches and schoolhouses. These were called “stations,” “safe houses,” and “depots.” The people operating them were called “stationmasters.” There were many well-used routes stretching west through Ohio to Indiana and Iowa. Harriet Tubman, perhaps the most well-known conductor of the Underground Railroad, helped hundreds of runaway slaves escape to freedom. She never lost one of them along the way.
hope this helps