History of Louisville, Kentucky
The history of Louisville, Kentucky spans nearly two-and-a-half centuries since its founding in the late 18th century. The geology of the Ohio River, with but a single series of rapids midway in its length from the confluence of the Monongahela and Allegheny rivers to its union with the Mississippi, made it inevitable that a town would grow on the site.
Source: Wikipedia — History of Louisville, Kentucky (CC BY-SA 4.0)