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.