The underground railroad was not a real railroad but a secret (i.e. "underground," similar to the underground economy) network of abolitionists who escorted slaves to Canada. The related Wikipedia link lists several railway terms which the participants reused.
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".
to help slaves escape
its not who discovered it its who created it
gfkwfcvdsa
because of the under ground railroad
harriet tubman