The literary movement of the (eighteen) nineties had, at the turn of the century, brought the American face to face with the age of science. As industry herded him from the farms where he was responsible to the weather and the earth into the cities where he took his orders from steam and electric power, wheels and cogs, even the average unthinking man was forced to some sort of revaluation of his basic concepts and values.
Robert Spiller, The Cycle of American Literature
To which I’d add…
The literary movement of the (nineteen) nineties, at the turn of the century, brough Americans face to face with, among many other things, terror — including terror over the placement of — pronouns.