The Gilded Age refers to the late 1800s, which saw a rise in wealth from industrialization but also growing social problems. Major characteristics included privately owned factories subject to government rules, and the rise of large corporations owned by shareholders. Robber barons like Rockefeller, Carnegie, and Vanderbilt amassed huge fortunes and monopolies in industries like oil, steel, and railroads. The period was characterized by laissez-faire policies but also saw tensions between big business, labor unions, and reformers. Inventions like the telephone, light bulb, and film camera transformed society.