Question: What is the name of the region that includes the cities Dover and Portsmouth, New Hampshire?

Passages:
Daniel E. Innis (born April 7, 1963) is an American academic, businessman and politician.  He is a Republican State Senator, representing District 24 in the New Hampshire Senate.  He is also a professor of marketing and hospitality management at the University of New Hampshire.  He served as the Dean of the Peter T. Paul College of Business and Economics at the University of New Hampshire from 2007 to 2013, overseeing major developments at the school.  He co-founded the Ale House Inn and the Hotel Portsmouth in historic downtown Portsmouth, New Hampshire.  On September 7, 2016, he announced the planned opening of the Great Island Inn in New Castle, New Hampshire, in 2017. William Wentworth (1616–1697) was a follower of John Wheelwright, and an early settler of New Hampshire.  Coming from Alford in Lincolnshire, he likely came to New England with Wheelwright in 1636, but no records are found of him in Boston.  When Wheelwright was banished from the Massachusetts Bay Colony for his role in the Antinomian Controversy, he established the settlement of Exeter, New Hampshire, and Wentworth followed him there and then to Wells, Maine.  After Wheelwright left Wells for Hampton, New Hampshire, Wentworth went to Dover, New Hampshire, and this is where he lived the remainder of his life.  He was the proprietor of a sawmill, and held several town offices, but is most noted for being an elder in his Dover church for nearly 40 years.  He had 11 children with two wives, and has numerous descendants, including many of great prominence. The Seacoast Region is the southeast area of the U.S. state of New Hampshire that includes the eastern portion of Rockingham County and the southern portion of Strafford County.  The region stretches 13 mi along the Atlantic Ocean from New Hampshire's border with Salisbury, Massachusetts to the Piscataqua River and New Hampshire's border with Kittery, Maine.  The shoreline is generally very rocky and rough in nature, although a few sandy beaches have been created using jetties/groins, particularly in the towns of Rye and Hampton.  The Seacoast Region stretches as far west as Epping.  Portsmouth, the largest municipality and only city in Rockingham County, serves as the cultural and commercial hub of the region.  Portsmouth has numerous historical landmarks and tourist attractions including Strawberry Banke, the Moffatt-Ladd House, the John Paul Jones House, and the Portsmouth Children's Museum, which moved to Dover in 2010.  The Seacoast Region was the first area of the state to be permanently settled by Europeans in the early 17th century. Interstate 95, the main Interstate Highway on the east coast of the United States, cuts through the Seacoast Region of New Hampshire.  The majority of it, from the Massachusetts border to the Portsmouth Circle in Portsmouth, is the 14.29 mi Blue Star Turnpike or New Hampshire Turnpike, a toll road maintained by the New Hampshire Department of Transportation Bureau of Turnpikes.  The final piece in Portsmouth splits from the Turnpike south of the circle, running 2.42 mi to the Piscataqua River Bridge, a steel arch bridge, towards Maine and the Maine Turnpike.  In its short length through New Hampshire, Interstate 95 traverses six municipalities - Seabrook, Hampton Falls, Hampton, North Hampton, Greenland, and Portsmouth. Dover is a city in Strafford County, New Hampshire, United States.  The population was 29,987 at the 2010 census, the largest in the New Hampshire Seacoast region.  The population was estimated at 31,153 in 2016.  It is the county seat of Strafford County, and home to Wentworth-Douglass Hospital, the Woodman Institute Museum, and the Children's Museum of New Hampshire. Norfolk County, Massachusetts Colony was one of the original four counties created in the Massachusetts Bay Colony.  The land was originally granted as separate from Massachusetts, but boundary disputes among the settlers led to their petitioning to join the colonial government to the south.  The county was created by the Massachusetts General Court on May 10, 1643, when it was ordered "that the whole plantation within this jurisdiction be divided into four sheires".  Norfolk County contained the settlements of Salisbury, Hampton, Haverhill, Exeter, Dover, and Portsmouth.  It effectively encompassed all settlements from the Merrimack River, north to the Piscataqua River, and extending inland about a dozen miles.  In 1680, the Province of New Hampshire was formally separated from Massachusetts, with Norfolk County forming the core.  Massachusetts retained the northern bank of Merrimack River and the towns of Salisbury and Haverhill were added to Essex County.  Hampton, Exeter, Dover, and Portsmouth were governed at two levels, town and province/colony, until 1769, when New Hampshire was itself divided into counties, so that Norfolk ceased to exist. New Hampshire Route 33 is an 9.090 mi east–west highway in the Seacoast Region of southeastern New Hampshire, connecting Stratham with Portsmouth.  The western terminus is at New Hampshire Route 108 in Stratham.  The eastern terminus is at U.S. Route 1 (Lafayette Road/Middle Street) in downtown Portsmouth.  It is a former routing of New Hampshire Route 101. WERZ (107.1 FM) is a radio station located in Portsmouth, New Hampshire, located at 107.1 on the FM dial.  On air it is presented as ""Z107"".  The station is owned by iHeartMedia, Inc..  WERZ broadcasts from studios located on Lafayette Road in Portsmouth and from a transmitter located on Long Hill in Stratham, New Hampshire.  WERZ's signal serves southeastern New Hampshire (more commonly known as the New Hampshire Seacoast Region), York County, Maine, and northeastern Massachusetts.  WERZ's legal identification is WERZ-Exeter/Portsmouth, with Exeter being the actual city of license. The Portsmouth, Great Falls and Conway Railroad (PGF&C) (later known as the Conway Branch of the Boston and Maine Railroad) is a former rail line between Rollinsford and Intervale, New Hampshire, in the United States.  At Rollinsford, the line connected to other lines to provide service between the White Mountains and coastal cities such as Boston.  At Intervale, it connected to the Mountain Division of the Maine Central Railroad.  The rail line takes its name from the city of Portsmouth, near its southern terminus; the city of Somersworth (formerly known as "Great Falls"); and the town of Conway, near its northern terminus.  Today, the infrastructure of the former PGF&C is owned by different entities, including the State of New Hampshire, the Conway Scenic Railroad, and the New Hampshire Northcoast Corporation.  Some segments are still operated as freight or heritage railways, while other segments are being maintained as rail trails. New Hampshire Route 16 is a 149.75 mi long north–south highway in New Hampshire.  Much of its length is close to the border with Maine.  The section from Portsmouth to Milton is a controlled-access toll highway known as the Spaulding Turnpike.  Between the Portsmouth Circle and Dover Point, US 4 is also routed along the Turnpike.  Its southern terminus of NH 16 is at the Portsmouth Traffic Circle, intersecting with Interstate 95 and the US 1 Bypass.  The northern terminus is at the Maine state line near Wentworth's Location, where it continues as Maine State Route 16.

Supporting sentences:
Dover is a city in Strafford County, New Hampshire, United States. The Seacoast Region is the southeast area of the U.S. state of New Hampshire that includes the eastern portion of Rockingham County and the southern portion of Strafford County.  The Seacoast Region stretches as far west as Epping.  Portsmouth, the largest municipality and only city in Rockingham County, serves as the cultural and commercial hub of the region.  The Seacoast Region was the first area of the state to be permanently settled by Europeans in the early 17th century.