The son of freed slaves, Garrett Morgan was determined to have a better life than laboring in the Kentucky fields with his parents and ten siblings. He began by sweeping floors in a clothing factory in Cleveland, Ohio, where he decided to invent a stronger belt for sewing machines. When he was promoted to sewing-machine repairman, Garrett was on his way. In 1911, 146 workers died in the shocking Triangle Shirtwaist Factory fire in New York City, so...