The Underground Railroad was a clandestine network of routes and safe houses that enabled thousands of enslaved African Americans to escape to freedom in the northern United States and Canada. This network was not a literal railroad but a series of secret pathways and shelters operated by abolitionists and sympathizers who risked their lives to assist fugitives (fiveable.me). The courage and ingenuity of those involved in the Underground Railroad were instrumental in challenging the institution of slavery and advancing the cause of freedom in America.