What Happened to Louisville Kentucky?

What happened to Louisville Kentucky?
References:
US Census
www.britannica...
www.american-r...
www.brookings....
www.ohiowaters...
ctmirror.org/2...
www.greaterlou...
nces.ed.gov/co...
louisvillemsd....
Images:
"Louisville Skyline" by The Pug Father is licensed under CC BY 2.0.
"The Kitchen: Chapter Six (Final Reveal!)" by HAUS By Emily May is licensed under CC BY 2.0.