The Treaty of Hartford is a treaty concluded between

New York New York most commonly refers to: * New York City, the most populous city in the United States, located in the state of New York * New York (state), a state in the northeastern United States New York may also refer to: Film and television * ...

and

Massachusetts Massachusetts (Massachusett: ''Muhsachuweesut Massachusett_writing_systems.html" ;"title="nowiki/> məhswatʃəwiːsət.html" ;"title="Massachusett writing systems">məhswatʃəwiːsət">Massachusett writing systems">məhswatʃəwiːsət'' En ...

on December 16,

1786 Events January–March * January 3 – The third Treaty of Hopewell is signed, between the United States and the Choctaw. * January 6 – The outward bound East Indiaman '' Halsewell'' is wrecked on the south coast of Engla ...

Hartford, Connecticut Hartford is the capital city of the U.S. state of Connecticut. It was the seat of Hartford County until Connecticut disbanded county government in 1960. It is the core city in the Greater Hartford metropolitan area. Census estimates since t ...

Background

The colonial charters for New York and Massachusetts both described their boundaries as extending westward to the

Pacific Ocean The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south, and is bounded by the conti ...

. However, both charters used distances from coastal rivers as their baselines, and thus both states could claim the same land. The area in dispute included all of

western New York Western New York (WNY) is the westernmost region of the U.S. state of New York. The eastern boundary of the region is not consistently defined by state agencies or those who call themselves "Western New Yorkers". Almost all sources agree WNY inc ...

State west of, approximately, Seneca Lake, extending all the way to the Niagara River and

Lake Erie Lake Erie ( "eerie") is the fourth largest lake by surface area of the five Great Lakes in North America and the eleventh-largest globally. It is the southernmost, shallowest, and smallest by volume of the Great Lakes and therefore also h ...

, and north to south from the shore of

Lake Ontario Lake Ontario is one of the five Great Lakes of North America. It is bounded on the north, west, and southwest by the Canadian province of Ontario, and on the south and east by the U.S. state of New York. The Canada–United States border span ...

to the

Pennsylvania Pennsylvania (; (Pennsylvania Dutch: )), officially the Commonwealth of Pennsylvania, is a state spanning the Mid-Atlantic, Northeastern, Appalachian, and Great Lakes regions of the United States. It borders Delaware to its southeast, ...

border.

Terms

New York and Massachusetts agreed to divide the rights in question with a treaty signed December 16. The states agreed that all of the land in question, about 6 million acres (24,000 km²), would be recognized as part of New York State. Massachusetts, in return, obtained the right of preemption, the title to all of the land, giving it the exclusive right to extinguish by purchase the possessory rights of the Indian tribes (except for a narrow strip along the Niagara River, the title to which was recognized to belong to New York). The compact also provided that Massachusetts could sell or assign its preemptive rights.

Aftermath

In 1788 Massachusetts sold its rights to the entire six million acres (24,000 km²) to

Oliver Phelps Oliver Phelps (October 21, 1749February 21, 1809) was early in life a tavern keeper in Granville, Massachusetts. During the Revolution he was Deputy Commissary of the Continental Army and served until the end of the war. After the war ended, ...

and

Nathaniel Gorham Nathaniel Gorham (May 27, 1738 – June 11, 1796; sometimes spelled ''Nathanial'') was an American Founding Father, merchant, and politician from Massachusetts. He was a delegate from the Bay Colony to the Continental Congress and for six months ...

for $1,000,000, payable in specie or in certain Massachusetts securities then trading at about 20 cents on the dollar, the money used to repay some of the state's debt from the Revolutionary War. Similar western boundary issues involving these and other states were resolved by the

Northwest Ordinance The Northwest Ordinance (formally An Ordinance for the Government of the Territory of the United States, North-West of the River Ohio and also known as the Ordinance of 1787), enacted July 13, 1787, was an organic act of the Congress of the C ...

passed by the

Congress of the Confederation The Congress of the Confederation, or the Confederation Congress, formally referred to as the United States in Congress Assembled, was the governing body of the United States of America during the Confederation period, March 1, 1781 – Mar ...

in July 1787.

Background

Terms

Aftermath

See also