Cresap's War (also known as the Conojocular War, from the Conejohela Valley where it was mainly located along the south bank) was a border conflict between Pennsylvania and Maryland fought in the 1730s. Hostilities erupted in 1730 with a series of violent incidents prompted by disputes over property rights and law enforcement.

The Mason–Dixon line is a demarcation line separating four U.S. states: Pennsylvania, Maryland, Delaware and West Virginia. It was surveyed between 1763 and 1767 by Charles Mason and Jeremiah Dixon as part of the resolution of a border dispute involving Maryland, Pennsylvania, and Delaware in the colonial United States. [1]

May 25, 2017 · Colonial Maryland and Pennsylvania had it harder than most: they both had legitimate (to them) claims to a large area of land. It was this competing interest that led to Cresap’s War, also known...

In the southwest corner of the state, near Mount Morris, there is a monument that reads: "MASON-DIXON LINE. Made famous as line between free and slave states before War Between the States. The survey establishing Maryland-Pennsylvania boundary began in 1763; halted by Indian wars 1767; continued to southwest corner in 1782; marked 1784."

Originally surveyed by Englishmen Charles Mason (1728-86) and Jeremiah Dixon (1733-79), the line separates Pennsylvania from Maryland and West Virginia along the 39º43ˊ N. parallel and …

Jun 18, 2024 · Pennsylvania and Maryland meet at the Delaware–Maryland–Pennsylvania Tri-State Point, which is located at the meeting point of the northwestern corner of Delaware, the northeastern corner of Maryland, and the southern edge of Pennsylvania.

Maryland was granted the territory north of the Potomac River/ Watkins Pointup to the fortieth parallel; Pennsylvania was granted land extending northward from a point "12 miles north of New Castle Towne," which is located south of the fortieth parallel.

Jan 17, 2025 · Mason-Dixon Line, originally the boundary between Maryland and Pennsylvania in the United States. In the pre-Civil War period it was regarded, together with the Ohio River, as the dividing line between slave states south of it and free-soil states north of it.

While the resolution of this dispute was no doubt a great relief to all parties, Maryland lost 4,300 square miles, and Virginia 1,100 square miles, to Pennsylvania—the outcome of, in the words of Edwin Danson, the “most ambitious geodetic survey ever conducted.” (Charles W. Mitchell)

May 25, 2021 · The colonial governments of Pennsylvania and Maryland became embroiled in the dispute when settlers from each colony started crossing the Susquehanna River back and forth and creating settlements in what was perceived to be each other’s territory.