Based on the attached Source 1 which statement best explains how a large number of free people and enslaved people responded to the institution of slavery in the mid-1800s?

C. They created a network of people and places to help individuals escape from slavery.

Explanation:

Source one shows the map of the United States and the free and slave states as well as the routes used to escape from slavery in the Underground Railroad.

This railroad was maintained by a large number of free and enslaved people who helped create a network that allowed for people to be able to escape from slave states either to the free states in the North or out of the country entirely.

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