Final answer:
Frederick Douglass aided escaped slaves as part of the Underground Railroad, a clandestine network of secret routes and safe houses to help enslaved individuals seek freedom in Northern free states and Canada.
Step-by-step explanation:
Frederick Douglass hid escaped slaves in his house as part of the Underground Railroad. The Underground Railroad was not an actual railroad but a network of secret routes and safe houses that were used in the 19th century by enslaved African Americans to escape into free states and Canada with the help of abolitionists and allies who were sympathetic to their cause. Despite the danger posed by the Fugitive Slave Law of 1850, prominent figures like Douglass and Harriet Tubman defied the law to support this clandestine operation, bolstering the freedom movement and setting a path for others to follow.