It wasn't a railroad, actually. It was the term for the smuggling of slaves from the South across the Mason-Dixon Line (border of Maryland and Pennsylvania that separates the free North from the slave states in the South). And there was innumerable times that slaves were smuggled (often hiding out in sympathetic white people's homes to avoid "slave catchers" that caught and returned slaves to their owner for reward)
The Under Ground Railroad was in Northern Minnesota.
It was, but it wasn't literally a railroad.
It was secret like being under ground.
Rosa parks made and took the under ground railroad
umm... i think it came from under the ground
she went under the under ground railroad
No, its called the underground railroad because they were "hidden".
its not who discovered it its who created it
to help slaves escape
harriet tubman
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because of the under ground railroad