A relative humidity of 50% is optimal; below 40% causes extremely dry air, leading to static electricity from friction (when you touch a metal cabinet in an AC building). Over 70% increases the feeling of heat, adding 5 degrees or more to the temperature sensed. There’s a sweet spot, or rather a sweet range, described by analysing the combination of air temperature and humidity in a Psychrometric Chart.
The Gilded Age, which spanned roughly from the late 1870s to the early 1900s, was a time of rapid industrialization, economic growth, and prosperity for the wealthy. It was also a time of exploitation and extreme poverty for workers.