Canada, Free, and History: HİSTORY$ @HISTORY , 12 feb.
 Slaveholders knew that enslaved people were escaping to Mexico, and the
 U.S. tried to get Mexico to sign a fugitive slave treaty. But Mexico refused to
 sign such a treaty, insisting that all enslaved people were free when they set
 foot on Mexican soil
 The Little-Known Underground Railroad That Ran South to Mexico
 The Underground Railroad ran south as well as north. For slaves in
 Texas, refuge in Canada must have seemed impossibly far away.
 history.com
FYI

FYI