Many American cities along the river network of the Mississippi boomed due to the opportunities that the flatboat trade presented. New Orleans was the final destination for most flatboats headed down the Mississippi, and it was from there that most of the goods were shipped on the oceans. Cincinnati, another major American trading city, first built itself on the flatboat trade. Its large sawmills produced most of the heavy lumber sent downriver on flatboats, and it also became a large hub for the pork trade. Other cities, like Memphis, Tennessee and Brownsville, Pennsylvania became hubs for outfitting and supplying flatboat traders.