The history of New York City (1855–1897) started with the inauguration in 1855 of Fernando Wood as the first mayor from Tammany Hall, an institution that dominated the city throughout this period. Reforms led to the New York City Police Riot of June 1857. There was chaos during the American Civil War, with major rioting in the New York Draft Riots. The Gilded Age brought about prosperity for the city's upper classes amid the further growth of a poor immigrant working class, as well as an increasing consolidation, both economic and municipal, of what would become the five boroughs in 1898.
