This lesson is all about the Second Industrial Revolution (1870–1914) — the age of electricity, steel, and mass production! ⚡ In this video, you’ll discover how inventions like the light bulb, telephone, and assembly line changed everyday life and shaped the 20th century. We’ll also talk about the new industries, workers, and ideas that made the world more connected than ever before. İbrahim Acar 10/A 76