During this time, the southern part of what is now Fall River (south of Columbia Street) remained part of Tiverton, Rhode Island. In 1856, the town of Tiverton, Rhode Island voted to split off its industrial northern section as Fall River, Rhode Island. In 1861, after decades of dispute, the United States Supreme Court moved the state boundary to what is now State Avenue, unifying both Fall Rivers as a city in Massachusetts (among other changes; see ).
During this time the southern part of what is now Fall River (south of Columbia Street) remained part of Tiverton Rhode Island In 1856 the town of Tiverton Rhode Island voted to split off its industrial northern section as Fall River Rhode Island In 1861 after decades of dispute the United States Supreme Court moved the state boundary to what is now State Avenue unifying both Fall Rivers as a city in Massachusetts (among other changes; see )