Who are four women who made health care important contributions to the advance of health care in the 19th century.?

Four notable women who made significant contributions to health care in the 19th century are Florence Nightingale, who revolutionized nursing practices and sanitation in hospitals; Clara Barton, founder of the American Red Cross, who provided critical medical assistance during the Civil War; Elizabeth Blackwell, the first woman to receive a medical degree in the U.S., who advocated for women in medicine; and Dorothea Dix, who championed mental health reform and improved conditions for the mentally ill. Their efforts transformed health care and laid the groundwork for modern practices.