In the thrilling third instalment of the "One Thing About History" series, young Abeo faces a chaotic world without traffic lights, leading to a dangerous collision. Desperate to find a solution, she travels back in time to meet Garrett Morgan, the brilliant inventor of the traffic light. Together, they navigate challenges and bring a vital innovation to life, forever changing the course of history. Join Abeo on this exciting journey, where history comes alive and everyday problems find extraordinary solutions!