who came up with the phrase gilded age and what was meant by it
Gilded Age The term "Gilded Age" for the period of economic boom after the American Civil War up to the turn of the century was applied to the era by historians in the 1920s, who took the term from one of Mark Twain's lesser known novels, The Gilded Age: A Tale of Today (1873). The book (co-written with Charles Dudley Warner) satirized the promised 'golden age' after the Civil War, portrayed as an era of serious social problems masked by a thin gold gilding of economic expansion.[4] In the 1920s and 30s "Gilded Age" became a designated period in American history. The term was adopted by literary and cultural critics as well as historians, including Van Wyck Brooks, Lewis Mumford, Charles Austin Beard, Mary Ritter Beard, Vernon Louis Parrington and Matthew Josephson. For them, "Gilded Age" was a pejorative term used to describe a time of materialistic excesses combined with extreme poverty.[5][6]
Dark Ages (historiography) The idea of a Dark Age originated with the Tuscan scholar Petrarch in the 1330s.[15][12] Writing of the past, he said: "Amidst the errors there shone forth men of genius; no less keen were their eyes, although they were surrounded by darkness and dense gloom".[16] Christian writers, including Petrarch himself,[15] had long used traditional metaphors of 'light versus darkness' to describe 'good versus evil'. Petrarch was the first to give the metaphor secular meaning by reversing its application. He now saw Classical Antiquity, so long considered a 'dark' age for its lack of Christianity, in the 'light' of its cultural achievements, while Petrarch's own time, allegedly lacking such cultural achievements, was seen as the age of darkness.[15]