that led to the American Revolution. The Greater Boston region has played a powerful scientific, commercial, and cultural role in the history of the United States. Before the American Civil War, the region was a center for the abolitionist, temperance, and transcendentalist movements. In 2004, Massachusetts became the first U.S. state to legally recognize same-sex marriage as a result of the decision of the Massachusetts Supreme Judicial Court in Boston. Many prominent American political dynasties have hailed from the Boston region, including the Adams and Kennedy families. Harvard University in Cambridge is the oldest institution of higher learning in the United States, with the largest financial endowment of any university, and whose Law School has spawned a contemporaneous majority of United States Supreme Court Justices. Kendall Square in Cambridge has been called "the most innovative square mile on the planet", in reference to the high concentration of entrepreneurial start-ups and quality of innovation which have emerged in the vicinity of the square since 2010. Both Harvard University and the Massachusetts Institute of Technology, also in Cambridge, have been ranked among the most highly regarded academic institutions in the world. Definitions Metropolitan Area Planning Council (MAPC) The most restrictive definition of the Greater Boston area is the region administered by the Metropolitan Area Planning Council. The MAPC is a regional planning organization created by the Massachusetts legislature to oversee transportation infrastructure and economic development concerns in the Boston area. The MAPC includes 101 cities and towns that are grouped into eight subregions. These include most of the area within the region's outer circumferential highway, I-495. In 2013, the population of the MAPC district was 3.2 million, which was 48% of the total population of Massachusetts, in an area of , of which 39% is forested and an additional 11% is water, wetland, or other open space. The eight sub regions and their principal towns are: Inner Core (Boston), Minuteman (Route 2 corridor), MetroWest (Framingham), North Shore (Lynn), North Suburban (Woburn), South Shore (Route 3 corridor), SouthWest (Franklin), and Three Rivers (Norwood). Notably excluded from the MAPC and its partner planning body, the Boston Region Metropolitan Planning Organization, are the Merrimack Valley cities of Lowell, Lawrence, and Haverhill, much of Plymouth County, and all of Bristol County; these areas have their own regional planning bodies. Bristol County is part of the Greater Boston CSA, as part of the Providence MSA. New England