Duluth, MN
The opening of the canal at Sault Ste. Marie, in 1855 and the contemporaneous announcement of the railroads' coming had made Duluth the only port with access to the Atlantic and Pacific Oceans. Soon the lumber industry, railroads and mining were all growing so quickly that the influx of workers could hardly keep up with demand and storefronts popped up almost overnight. By 1868 business in Duluth was really booming. "The Zenith City of the Unsalted Seas".