Political relations between the Cayuga, the
British, and the
Thirteen Colonies during the
American Revolution were complicated and variable, with Cayuga warriors fighting on both sides (as well as abstaining from war entirely). Most of the Iroquois nations allied with the British, in part hoping to end encroachment on their lands by colonists. In 1778, various Iroquois bands, oft allied with British-colonial loyalists (
Tories) conducted a series of raids along the frontier from Connecticut to New York and into
south-central Pennsylvania threatening much of the Susquehanna Valley. From the revolutionary government's point of view in Philadelphia, several of these were atrocities, and in the early summer that body proceeded to order Washington to send regiments to quell these disturbances. Consequently, in 1779, General
George Washington of the
Continental Army appointed General
John Sullivan and
James Clinton to lead the
Sullivan Expedition, a retaliatory military campaign designed to unseat the Iroquois Confederacy and prevent the nations from continuing to attack New York militias and the Continental Army. The campaign mobilized 6200 troops and devastated the Cayuga and other Iroquois homelands, destroying 40-50 villages. Those destroyed included major Cayuga villages such as
Cayuga Castle and
Chonodote (Peachtown). The expedition, with attacks from the spring through the fall, also destroyed the crops and winter stores of the Iroquois, to drive them out of the land. Survivors fled to other Iroquois tribes, or to
Upper Canada. Some were granted land there by the British in recognition of their loyalty to the Crown. Following the end of the war, the
Central New York Military Tract was established in order to grant land bounties to veterans. The tract originally included a Cayuga reservation surrounding the north end of Cayuga Lake, but the reservation was given up a few years later in a treaty with the state. Some Seneca and Cayuga had left the area earlier even as
Tuscarora were migrating north in the early decades of the 1700s, going west of the
Alleghenies to the long depopulated
Ohio Country lands; settling in
Western Pennsylvania,
West Virginia, and Eastern
Ohio. These tribes became known as the
Mingo or "Black Mingo", for they had a bad reputation, so were able to take in their kin after that systematic bloodletting in 1779. After the Sullivan Campaign, more Cayuga joined them, as well as some other bands of Iroquois who left New York before the end of the Revolutionary War. As the American Revolution was nearing its end, settlers resumed trekking west of the Alleghenies in a trickle that by 1810, became a flood. Other eastern Amerindians, joined by eastward remnants of Susquehannock and large groups of
Delaware peoples had also traveled the ancient trails through the
gaps of the Allegheny to found settlements such as
Kittanning (village) and others in the Ohio Valley. Only weakened cobbled together tribes, such as the Mingo, were in the land, which was still mostly empty; creating a situation drawing settlers west in increasing numbers. By 1831 those Indians left in the lands east of Ohio were encouraged by bigotry, and at times forcibly removed to the
Indian Territory, in what became Oklahoma. Their remnants, consequently, the
Seneca-Cayuga Tribe of Oklahoma are a federally recognized tribe. On November 11, 1794, the (New York) Cayuga Nation (along with the other
Haudenosaunee nations) signed the
Pickering Treaty with the United States, by which they ceded much of their lands in New York to the United States, forced to do so as allies of the defeated British. It was the second treaty the United States entered into. It recognized the rights of the
Haudenosaunee as sovereign nations. The Pickering Treaty remains an operating legal document; the U.S. government continues to send the requisite gift of muslin fabric to the nations each year. The state of New York made additional treaties with the tribes but failed to get them ratified by the Senate. As it lacked the constitutional authority to deal directly with the tribes, individual tribes have sued for land claims since the late 20th century, charging New York had no authority for their actions. The state rapidly arranged sales of more than of former Iroquois lands at inexpensive prices to encourage development in the state. It also granted some western lands to war veterans in lieu of pay. Speculators bought up as much land as they could and resold it to new settlers. Land-hungry Yankees from New England flooded into New York in waves of new settlement, as did some settlers from the Mohawk Valley. Immigrants also came from the British Isles and France after the war. ==Recognized bands==