Erie Triangle

The Erie Triangle is a roughly 300-square-mile tract of American land that was the subject of several competing colonial-era claims and which was eventually acquired by the U.S. federal government and sold to Pennsylvania so that the state would have access to a freshwater port on Lake Erie. The Erie Triangle land makes up a large portion of present-day Erie County, Pennsylvania.

Most of northwestern Pennsylvania came under American control following the 1784 Treaty of Fort Stanwix with the Iroquois Confederacy. The following year, a boundary dispute between New York and Pennsylvania erupted. Following a surveying effort by Andrew Ellicott representing the Pennsylvanians and James Clinton and Simeon DeWitt representing the New Yorkers, the western edge of New York was set at 20 miles (32 km) east of Pennsylvania's Presque Isle, a small peninsula off the coast of Erie, Pennsylvania. However, this left an unclaimed area, which came to be known as the Triangle Lands.

The Triangle Lands problematically fell under neither New York nor Pennsylvania's charter, while both Connecticut and Massachusetts also spoke up with claims derived from their original colonial "sea to shining sea" grants.

Of these four competing claimants (Pennsylvania, New York, Connecticut, and Massachusetts), only Pennsylvania was landlocked, except for a very tiny strip of coastline. Following some pressure from the new federal government, all four states surrendered their claims to that entity, which then, in 1792, turned around and sold final rights to the 202,187 acres (818.22 km²) of land to Pennsylvania for $151,640.25 (75 ¢/acre). The Six Nations of the Iroquois Confederacy released the land to Pennsylvania in January 1789 for payments of $2,000 from Pennsylvania and $1,200 from the federal government. The Seneca Nation separately settled land claims against Pennsylvania in February 1791 for the sum of $800. This was accomplished without the approval of the federal government and in violation of the Contract Clause of the United States Constitution which reserved the right to make treaties to the federal government. With this access to the Great Lakes, Pennsylvania was persuaded to accept the western boundary established by the Surveyor General of the Northwest Territory Following passage of the Northwest Ordinance, in 1787.

...
Wikipedia