![Engraving by an unknown artist showing slaves picking sugar cane in Louisiana, 1833.](https://imagenes.elpais.com/resizer/v2/TOJENG537BCJRFN2XY354P5UXE.jpg?auth=1f034d6516fe5a89aaa491dc3aa4deb55e3b55174ca4e6e4241960b629b77765&width=414&height=233&focal=2421%2C1029)
The Underground Railroad of the south: The unknown story of the slaves who fled to Mexico
Historian Alice Baumgartner connects the Civil War with the abolition of slavery in its neighboring country: ‘Lincoln and Juárez’s alliance contributed to strangling the Confederacy’