Thank you for your question.
Harriet Tubman was a former slave from the United States who became one of the leaders of the Underground Railroad.
The following websites have more information about Harriet Tubman and the Underground Railroad
http://www.history.com/topics/harriet-tubman - Harriet Tubman (History.com)
http://www.history.com/topics/underground-railroad - Underground Railroad (History.com)
You should also check Encyclopedia Britannica http://school.eb.com/ for more information. Ask your school's Learning Commons Informationist for the username and password.
Please let us know if you have any more questions.
