of water-powered mills), others favor the potential for agglomeration. Steam engines made it possible to easily work, produce, market, specialize, viably expand westward without having to worry about the less abundant presence of waterways, and live in communities that weren't geographically isolated in proximity to rivers and streams. Cities and towns were now built around factories where steam engines served as the foundation for the livelihood of many of the citizens. By promoting the agglomeration of individuals, local markets were established and often met with impressive success, cities quickly grew and were eventually urbanized, the quality of living increased as infrastructure was put in place, finer goods could be produced as acquisition of materials became less difficult and expensive, direct local competition led to higher degrees of specialization, and labor and capital were in rich supply. In some counties where the establishments utilized steam power, population growths were even seen to increase. These steam-powered towns encouraged growth locally and on the national scale, further validating the economic importance of the steam engine. The steamboat This period of economic growth, which was ushered in by the introduction and adoption of the steamboat, was one of the greatest ever experienced in the United States. Robert Fulton, Robert Livingston and Henry Shreve were all big contributors to the introduction of the steamboat to the American public. Around 1815, steamboats began to replace barges and flatboats in the transport of goods around the United States. Prior to the steamboat, rivers were generally only used in transporting goods from east to west, and from north to south as fighting the current was very difficult and often impossible. Non-powered boats and rafts were assembled up-stream, would carry their cargo down stream, and would often be disassembled at the end of their journey; with their remains being used to construct homes and commercial buildings. Following the advent of the steamboat, the United States saw an incredible growth in the transportation of goods and people, which was key in westward expansion. Prior to the steamboat, it could take between three and four months to make the passage from New Orleans to Louisville, averaging twenty miles a day. With the steamboat this time was reduced drastically with trips ranging from twenty-five to thirty-five days. This was especially beneficial to farmers as their crops could now be transported elsewhere to be sold. The steamboat also allowed for increased specialization. Sugar