The correct answer is the Underground Road! The Underground Road was a network of safe houses and secret routes in 19th century that the slaves could use to escape to the north or to Canada. People helping the slaves were both black and white and both free and slaves were helping too!
The historians could be wrong without proper proof to back up their so-called "facts". Therefore, they would need to study and know what they're talking about, before presenting their statements as facts.
