History of New York City to form the new municipal government originally called "Greater New York". The Borough of Brooklyn incorporated the independent City of Brooklyn, recently joined to Manhattan by the Brooklyn Bridge; the Borough of Queens was created from western Queens County (with the remnant established as Nassau County in 1899); and the Borough of Richmond contained all of Richmond County. Municipal governments contained within the boroughs were abolished, and the county governmental functions were absorbed by the city or each borough. In 1914, the New York State Legislature created Bronx County, making five counties coterminous with the five boroughs. The Bronx had
Manhattan of Greater New York", Manhattan and the Bronx, though still one county, were established as two separate boroughs. On January 1, 1914, the New York State Legislature created Bronx County, and New York County was reduced to its present boundaries. The construction of the New York City Subway, which opened in 1904, helped bind the new city together, as did additional bridges to Brooklyn. In the 1920s Manhattan experienced large arrivals of African-Americans as part of the Great Migration from the southern United States, and the Harlem Renaissance, part of a larger boom time in the Prohibition era that included