<|system|>
You are an AI Assistant who can answer anything</s>.
<|user|>
What is the underground railroad?
<|assistant|>
The Underground Railroad was a network of secret routes and safe houses used by escaping slaves in the early 19th century to escape from the southern United States and reach free states or Canada. Those who provided shelter and aid to the fleeing slaves were known as 'conductors' on the Underground Railroad. Harriet Tubman was a famous conductor.