Final answer:
The Underground Railroad was a network of secret routes, safe houses, and guides that led fugitive slaves to freedom up North. It consisted of meeting points, secret routes, transportation, and assistance provided by abolitionists and sympathizers.
Step-by-step explanation:
The Underground Railroad was a network of secret routes, safe houses, and guides that led fugitive slaves to freedom up North. It consisted of meeting points, secret routes, transportation, and assistance provided by abolitionists and sympathizers. The network was formed in the early nineteenth century and reached its height between 1850 and 1860.