north- underground railroad (18 h 45 m, 16 ene 1700 año – 18 h 14 m, 30 ene 1865 año)

Descripción:

secret routes and safe houses used to free slaves and go to canada 100,000 slaves were free they escaped by the underground railroads and made it to canada

Underground Railroad. Image. Britannica School, Encyclopædia Britannica, 1 Nov. 2017. school.eb.com/levels/middle/assembly/view/145447. Accessed 20 Jan. 2018.