The Gilded Age is the name given to the decades of explosive American industrial growth, roughly the 1870s to 1900, when railroads, steel, and oil built the modern economy and a handful of businessmen amassed fortunes on a scale never seen before. It was an era of dazzling wealth alongside crowded slums, brutal labor, and open political corruption. The name comes from an 1873 satirical novel by Mark Twain and Charles Dudley Warner, mocking a society that glittered on the surface and was corrupt beneath, and the tycoons who dominated it are still remembered by two rival names: robber barons and captains of industry.
The same men were called two opposite things. To their admirers, Andrew Carnegie, John D. Rockefeller, and J.P. Morgan were captains of industry who forged a modern nation out of iron and oil. To their critics, they were robber barons who crushed rivals, cheated workers, and bought politicians to do it. Both descriptions fit the same careers, often in the same year. A century later, Americans still cannot agree which word is the true one, and the argument is really about whether great private wealth is something a country builds or something it suffers.