The mighty Calusa ruled South Florida for centuries, wielding military power, trading and collecting tribute along routes that sprawled hundreds of miles, creating shell islands, erecting enormous buildings and dredging canals wider than some highways. Unlike the Aztecs, Maya and Inca, who built their empires with the help of agriculture, the Calusa kingdom was founded on fishing.
Click here for original story, Sophisticatedly engineered ‘watercourts’ stored live fish, fueling Florida’s Calusa kingdom
Source: Phys.org