Question: Which Virginia town speaks the High Tider dialect and has lost 67% of its landmass since 1850?

Context paragraphs:
Tangier, Virginia: Tangier is a town in Accomack County, Virginia, United States, on Tangier Island in Chesapeake Bay.  The population was 727 at the 2010 census.  Since 1850, the island's landmass has been reduced by 67%.  Under the mid-range sea level rise scenario, much of the remaining landmass is expected to be lost in the next 50 years and the town will likely need to be abandoned.

1945 Washington Senators season: The 1945 Washington Senators won 87 games, lost 67, and finished in second place in the American League.  They were managed by Ossie Bluege and played home games at Griffith Stadium.

Coptic pronunciation reform: Coptic pronunciation reform, since 1850, has resulted in two major shifts in the use of Bohairic, the dialect of Coptic used as the liturgical language of the Coptic Orthodox Church of Alexandria.  The two traditions of pronunciation in contemporary use arise from two successive reforms in the 19th and 20th centuries:

Fireworks by Grucci: Fireworks by Grucci is a fireworks company headquartered in Bellport on New York's Long Island.  It has been a family run business since 1850.  The company's main fireworks office & operations are in Bellport, NY with a manufacturing and government work factory in Radford, Virginia.

Criser High School: Criser High School was an African American school accommodating grades 1-12 constructed in 1959 in the Northern Virginia town of Front Royal, Virginia.  Its opening occurred the same year 22 African American students integrated the all-white Warren County High School which drew national media attention.

Atlee Hammaker: Charlton Atlee Hammaker (born January 24, 1958) is a former Major League Baseball left-handed pitcher who played the majority of his career for the San Francisco Giants, from 1982 to 1990.  He also played for the Kansas City Royals, San Diego Padres, and Chicago White Sox.  During his twelve-year career, he won 59 games, lost 67 games, and netted five saves.

Winifrede, West Virginia: Winifrede is an unincorporated community in Kanawha County, West Virginia, United States.  Winifrede is 2.5 mi southwest of Chesapeake.  Winifrede has a post office with ZIP code 25214.  It is home of the Big Eagle Railroad (formerly known as Winifrede Mining and Manufacturing Company, Winifrede Collieries, and Winifrede Railroad), one of the oldest short-line railroad operations in the United States, having been in existence since 1850.  The Winifrede Railroad was incorporated in November 1881 and opened in 1882; the original operation was closed in 1988 and reopened as the Big Eagle Railroad in 2000-01.

High Tider: High Tider or "Hoi Toider" is a dialect of American English spoken in very limited communities of the South Atlantic United States—particularly, several small island and coastal townships of the rural North Carolina "Down East" seaside region that encompasses the Outer Banks and Pamlico Sound (specifically including Atlantic, Sea Level, and Harkers Island in eastern Carteret County, and also Ocracoke) as well as of the Chesapeake Bay (such as Tangier and Smith Island).  The term is also a local nickname for any native resident of these regions.

National Bank of Belgium: The National Bank of Belgium (NBB; Dutch: "Nationale Bank van België" , French: "Banque nationale de Belgique" , German: "Belgische Nationalbank" ) has been the central bank of Belgium since 1850.  The National Bank of Belgium was established with 100% private capital by a law of 5 May 1850 as a "Société Anonyme" (SA).  It is a member of the European System of Central Banks.

Stubby Overmire: Frank W. Overmire (May 16, 1919 – March 3, 1977) was a Major League Baseball pitcher who played ten seasons for the Detroit Tigers (1943–49), St. Louis Browns (1950–52), and New York Yankees (1951).  In ten seasons, Overmire won 58 games and lost 67 with a 3.96 earned run average.  Because of his stature, 5 ft and 170 lb , the left-hander was nicknamed "Stubby."

Supporting paragraphs: High Tider Tangier, Virginia
Answer: Tangier