How did steel and the light bulb impact the industrial growth of the US?

Steel and the light bulb were pivotal in driving industrial growth in the U.S. Steel, as a strong and versatile material, enabled the construction of skyscrapers, bridges, and railways, facilitating urbanization and transportation. The invention of the light bulb extended productive hours beyond daylight, enhancing factory efficiency and worker output. Together, these innovations transformed industries, spurred economic expansion, and reshaped American society in the late 19th and early 20th centuries.