sentences:  Some Native American tribes used the leaves of sassafras to treat wounds by rubbing the leaves directly into a wound, and used different parts of the plant for many medicinal purposes such as treating acne, urinary disorders, and sicknesses that increased body temperature, such as high fevers.They also used the bark as a dye, and as a flavoring.Sassafras wood was also used by Native Americans in the southeastern United States as a fire-starter because of the flammability of its natural oils.