A lot vs. Alot: 9 Grammatical Pitfalls
in the US, a period c 1870 to 1898 (or World War I), which was marked by the growth of industry and wealth which supported materialism and political corruption
coined by Mark Twain
in reference to an era in U.S. history, from the novel "The Gilded Age" by Mark Twain and C.D. Warner, published 1873.