The first motorized streetcars in the District began service in 1888 and spurred growth in areas beyond the City of Washington's original boundaries. In 1888, Congress required that all new developments within the District conform to the layout of the City of Washington. The City of Washington's northern border of Boundary Street was renamed Florida Avenue in 1890, reflecting growth of suburban areas in the County of Washington. The city's streets were extended throughout the District starting in 1893. An additional law passed in 1895 mandated that Washington formally absorb Georgetown, which until then had maintained a nominal separate identity, and renamed its streets. With a consolidated government and the transformation of suburban areas within the District into urban neighborhoods, the entire city eventually took on the name Washington, D.C.