Florence Nightingale, born on May 12, 1820, in Italy, became a pioneering nurse who revolutionized health care during the Crimean War by improving hospital hygiene and patient care. She founded the Nightingale School for Nurses and was the first woman to receive the British Order of Merit, significantly influencing nursing practices worldwide and using statistics to advocate for health reform. Nightingale’s legacies include establishing nursing as a respectable profession and creating vital statistical tools like the pie chart and line charts.