Electricity (the light bulb specifically). Artificial lighting extended the amount of time people spent outside socializing and instigated an expansion in the entertainment industry
Tiber River this is your answer
The XYZ affair was a diplomatic incident in the late 1790s in the Adams administration wherein the French government demanded bribes before negotiations were able to even begin and the correspondence was released. A small Naval war broke out and the Adams administration used the furor against the French to hurt the Democratic Republicans and build up the national military.
They were known as the Sans Culottes.
<span>The first Monday of each month became a holiday</span>
