🔌 Black history facts they don’t teach in school A Black man’s invention made TVs, computers, and even pacemakers work better—but most people have never heard his name. 📡 Otis Boykin created an improved electrical resistor, a small but powerful invention used in electronics, military technology, and life-saving medical devices. ❤️ Pacemakers help keep the heart beating, and without his work, they wouldn’t be as reliable as they are today. 💰 Tech companies made billions from his ideas, but his

850K views · 10K reactions | No siempre los objetos que llegan a la tienda son lo suficientemente valiosos, aunque sus dueños estén seguros de lo contrario. ¿Rick puede tener suerte incluso en estos casos? #ElPrecioDeLaHistoria #History | HISTORY | Facebook