The Underground Railroad was a network that helped slaves escape to freedom between 1800-1865. It started as informal paths and safe houses used by runaway slaves and grew to a system organized by the National Antislavery Society. Escaped slaves were guided along routes to stations operated by conductors and station masters, where they would find food, rest, and disguises before continuing north towards freedom. Famous conductors included Harriet Tubman and Thomas Garrett, who risked arrest to lead hundreds to freedom despite rewards for their capture.