Treaty of Hartford (1786)
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The Treaty of Hartford is a treaty concluded between New York and Massachusetts on December 16, 1786 in Hartford, Connecticut, over the ownership of the land which now comprises Western New York.
New York and Massachusetts both claimed the same land for different reasons: New York based its claim on various treaties that it concluded with Indian tribes, whereas Massachusetts invoked its colonial charter, which described its boundaries as extending westward to the Pacific Ocean. The area in dispute included all of western New York State west of, approximately, Seneca Lake, extending all the way to the Niagara River and Lake Erie, and north to south from the shore of Lake Ontario to the Pennsylvania border.[1][2]
Terms
New York and Massachusetts agreed to divide the rights in question with a treaty signed December 16.[3][4] 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.[1]