when was the gilded age

The Gilded Age in United States history is the period roughly from the late 1860s or 1870s to around 1900 or the early 1900s. It followed the Civil War and Reconstruction era and preceded the Progressive Era. This era, named by Mark Twain in his 1873 novel "The Gilded Age: A Tale of Today," was characterized by rapid economic growth, industrialization, significant wealth inequality, political corruption, and a massive influx of immigrants. Historians set the period approximately from 1870–1900, although some extend it slightly before or after these dates. The Gilded Age gradually ended around 1901 with the start of the Progressive Era reforms and the administration of President Theodore Roosevelt.