Answer + Explanation:
Dorothea Dix was a leading advocate for humane treatment of the mentally ill in the United States during the 19th century. She was a social reformer who worked tirelessly to improve conditions for the mentally ill and campaigned for the establishment of specialized hospitals for their care. Dix traveled extensively throughout the country, visiting asylums and lobbying state legislatures for funding to improve their facilities and treatment methods. She is considered a pioneer in the field of mental health and her efforts helped to establish many of the first public mental hospitals in the United States.