[PAR] [TLE] Mason–Dixon line [SEP] The Mason–Dixon line, also called the Mason and Dixon line or Mason's and Dixon's line, was surveyed between 1763 and 1767 by Charles Mason and Jeremiah Dixon in the resolution of a border dispute involving Maryland, Pennsylvania, and Delaware in Colonial America.  It is still a demarcation line among four U.S. states, forming part of the borders of Pennsylvania, Maryland, Delaware, and West Virginia (originally part of Virginia before 1863). [PAR] [TLE] Maryland Line, Maryland [SEP] Maryland Line is an unincorporated town in Baltimore County, Maryland just south of the Mason–Dixon line below York County, Pennsylvania.  It is accessible from exits 36 and 37 off I-83.  In the 19th century it was known as "New Market," but the name was changed to avoid confusion with a town in Frederick County with the same name.
[PAR] [TLE] Mason – Dixon line [ SEP ] The Mason – Dixon line , also called the Mason and Dixon line or Mason 's and Dixon 's line , was surveyed between 1763 and 1767 by Charles Mason and Jeremiah Dixon in the resolution of a border dispute involving Maryland , Pennsylvania , and Delaware in Colonial America . It is still a demarcation line among four U.S. states , forming part of the borders of Pennsylvania , Maryland , Delaware , and West Virginia ( originally part of Virginia before 1863 ) . [PAR] [TLE] Maryland Line , Maryland [ SEP ] Maryland Line is an unincorporated town in Baltimore County , Maryland just south of the Mason – Dixon line below York County , Pennsylvania . It is accessible from exits 36 and 37 off I-83 . In the 19th century it was known as " New Market , " but the name was changed to avoid confusion with a town in Frederick County with the same name .
How many states does the boundary line below the New Market line border?
How many states does the boundary line below the New Market line border ?
four
four