The Gilded Age in the United States lasted from around 1870 to 1900. This period saw massive industrial growth and the rise of large corporations due to new inventions and industries like steel, oil, railroads, and electricity. Inventors like Edison, Bell, the Wright Brothers, and others developed many modern technologies. Business leaders and industrialists like Rockefeller, Carnegie, and Morgan amassed huge fortunes but often used corrupt business practices that angered farmers and workers. Labor unions formed to fight for better conditions but faced opposition. The period was marked by rapid change, wealth accumulation by some, but also corruption and poor conditions for many workers and farmers.