The Spanish Flu, a devastating global pandemic that swept the world from 1918 to 1920, left an indelible mark on history. Originating in the United States, the virus spread rapidly, infecting an estimated 500 million people worldwide and claiming the lives of an estimated 50 to 100 million, more than the death toll of World War I. Cities were overwhelmed, medical resources were stretched thin, and social and economic life was disrupted. The pandemic eventually subsided, but it left a lasting legacy of grief, inspiring advancements in public health and epidemiology and shaping cultural and historical perspectives on pandemics and global health.