Underground Railroad (11 feb 1796 año – 27 mar 1868 año)
Descripción:
The underground railroad, created b Harriet Tubman, was a system that helped free slaves from the south.
http://school.eb.com/levels/middle/assembly/view/183711
United States: Underground Railroad. Video. Britannica School, Encyclopædia Britannica, 1 Nov. 2017. school.eb.com/levels/middle/assembly/view/183711. Accessed 19 Jan. 2018.
Underground Railroad. Image. Britannica School, Encyclopædia Britannica, 1 Nov. 2017. school.eb.com/levels/middle/assembly/view/145447. Accessed 18 Jan. 2018.
Añadido al timeline:
Civil War
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