Florence Nightingale was an English social reformer and statistician who revolutionized the field of nursing. Born in 1820 in Florence, she rose to international prominence during the Crimean War by organizing medical care for wounded soldiers in Constantinople. Through her focus on hygiene and improved living standards, she significantly lowered mortality rates. Beyond her clinical work, she was a pioneer in data visualization, developing graphical methods to communicate statistical findings. Her efforts to professionalize nursing led to the establishment of the first secular nursing school in London, forever changing the role of women in the medical workforce.