Iroquois
Expansion

In Reflections in Bullough's Pond, historian Diana Muir argues that the pre-contact Iroquois were an imperialist, expansionist culture whose cultivation of the corn/beans/squash agricultural complex enabled them to support a large population. They made war primarily against neighboring Algonquian peoples. Muir uses archaeological data to argue that the Iroquois expansion onto Algonquian lands was checked by the Algonquian adoption of agriculture. This enabled them to support their own populations large enough to resist Iroquois conquest. The People of the Confederacy dispute this historical interpretation, regarding the League of the Great Peace as the foundation of their heritage.

The Iroquois may be the Kwedech described in the oral legends of the Mi'kmaq nation of Eastern Canada. These legends relate that the Mi'kmaq in the late pre-contact period had gradually driven their enemies – the Kwedech – westward across New Brunswick, and finally out of the Lower St. Lawrence River region. The Mi'kmaq named the last-conquered land Gespedeg or "last land", from which the French derived Gaspé. The "Kwedech" are generally considered to have been Iroquois, specifically the Mohawk; their expulsion from Gaspé by the Mi'kmaq has been estimated as occurring c. 1535–1600.

Around 1535, Jacques Cartier reported Iroquoian-speaking groups on the Gaspé peninsula and along the St. Lawrence River. Archeologists and anthropologists have defined the St. Lawrence Iroquoians as a distinct and separate group (and possibly several discrete groups), living in the villages of Hochelaga and others nearby (near present-day Montreal), which had been visited by Cartier. By 1608, when Samuel de Champlain visited the area, that part of the St. Lawrence River valley had no settlements, but was controlled by the Mohawk as a hunting ground. The fate of the Iroquoian people that Cartier encountered remains a mystery, and all that can be stated for certain is when Champlain arrived, they were gone. On the Gaspé peninsula, Champlain encountered Algonquian-speaking groups. The precise identity of any of these groups is still debated. On July 29, 1609, Champlain assisted his allies in defeating a Mohawk war party by the shores of what is now called Lake Champlain, and again in June 1610, Champlain fought against the Mohawks.

The Iroquois became well known in the southern colonies in the 17th century by this time. After the first English settlement in Jamestown, Virginia (1607), numerous 17th-century accounts describe a powerful people known to the Powhatan Confederacy as the Massawomeck, and to the French as the Antouhonoron. They were said to come from the north, beyond the Susquehannock territory. Historians have often identified the Massawomeck / Antouhonoron as the Haudenosaunee.

In 1649, an Iroquois war party, consisting mostly of Senecas and Mohawks, destroyed the Huron village of Wendake. In turn, this ultimately resulted in the breakup of the Huron nation. With no northern enemy remaining, the Iroquois turned their forces on the Neutral Nations on the north shore of Lakes Erie and Ontario, the Susquehannocks, their southern neighbor. Then they destroyed other Iroquoian-language tribes, including the Erie, to the west, in 1654, over competition for the fur trade. Then they destroyed the Mohicans. After their victories, they reigned supreme in an area from the Mississippi River to the Atlantic Ocean; from the St. Lawrence River to the Chesapeake Bay.

Michael O. Varhola has argued their success in conquering and subduing surrounding nations had paradoxically weakened a Native response to European growth, thereby becoming victims of their own success.

The Five Nations of the League established a trading relationship with the Dutch at Fort Orange (modern Albany, New York), trading furs for European goods, an economic relationship that profoundly changed their way of life and led to much over-hunting of beavers.

Between 1665 and 1670, the Iroquois established seven villages on the northern shores of Lake Ontario in present-day Ontario, collectively known as the "Iroquois du Nord" villages. The villages were all abandoned by 1701.

Over the years 1670–1710, the Five Nations achieved political dominance of much of Virginia west of the Fall Line and extending to the Ohio River valley in present-day West Virginia and Kentucky. As a result of the Beaver Wars, they pushed Siouan -speaking tribes out and reserved the territory as a hunting ground by right of conquest. They finally sold to British colonists their remaining claim to the lands south of the Ohio in 1768 at the Treaty of Fort Stanwix.

Historian Pekka Hämäläinen writes of the League, "There had never been anything like the Five Nations League in North America. No other Indigenous nation or confederacy had ever reached so far, conducted such an ambitious foreign policy, or commanded such fear and respect. The Five Nations blended diplomacy, intimidation, and violence as the circumstances dictated, creating a measured instability that only they could navigate. Their guiding principle was to avoid becoming attached to any single colony, which would restrict their options and risk exposure to external manipulation."
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