national office for himself. Long-term adverse factors came into play. In 1865 came the end of the American Civil War and all the extra business it had generated. In 1866 came the end of Canadian–American Reciprocity Treaty, which led to higher and damaging American tariffs on goods imported from Nova Scotia. In the long run the transition at sea from wood-wind-water sailing to steel steamships undercut the advantages Nova Scotia had enjoyed before 1867. Many residents for decades grumbled that Confederation had slowed the economic progress of the province and it lagged other parts of Canada. Repeal, as anti-confederation became known, would rear its head again in the 1880s, and transform into the Maritime Rights Movement in the 1920s. Some Nova Scotia flags flew at half mast on Dominion Day as late as that time. Golden Age of Sail Nova Scotia became a world leader in both building and owning wooden sailing ships in the second half of the century. Nova Scotia produced internationally recognized ship builders Donald McKay, John M. Blaikie and William Dawson Lawrence and ship designers such as Ebenezer Moseley as well the propeller inventor John Patch. Notable ships included the barque Stag, a clipper renowned for speed and the ship William D. Lawrence, the largest wooden ship ever built in Canada. Mariners such a Capt. George "Rudder" Churchill of Yarmouth became famous for their voyages. The province also produced a notable 19th-century female mariner, Bessie Hall from Annapolis Royal. The most famous of the sailors from Nova Scotia was Joshua Slocum who became the first man to sail single-handedly around the world (1895). Competition from steamships in the late 19th century ended the Golden Age of Sail, although the legacy continued to inspire mariners and the public into the following century with the many racing victories of the Bluenose schooner. The population grew steadily from 277,000 in 1851 to 388,000 in 1871, mostly from natural increase since immigration was slight. The era is often called the province's golden age due to the economic growth, growth of towns and villages, maturing of business and institutions and the success of industries like shipbuilding. The idea of a past golden age came to prominence in the early 20th century by economic reformers in the Maritime Rights Movement and was exploited by the tourism industry in the 1930s to lure tourists to a romantic era of tall ships and antiques.