the area. The agricultural Pocomtuc tribe lived in unfortified villages alongside the Connecticut River north of the Enfield Falls on the fertile stretch of hills and meadows surrounding Springfield, Massachusetts. The Pocomtuc village of Agawam eventually became Springfield, situated on the Bay Path where the Connecticut River meets the western Westfield River and eastern Chicopee River. The Pocomtuc villagers at Agawam helped Puritan explorers settle this site and remained friendly with them for decades, unlike tribes farther north and south along the Connecticut River. The region stretching from Springfield north to the New Hampshire and Vermont state borders fostered many agricultural Pocomtuc and Nipmuc settlements, with its soil enhanced by sedimentary deposits. Occasionally, these villages endured invasions from more aggressive confederated tribes living in New York, such as the Mohawk, Mahican, and Iroquois tribes. The Pennacook tribe mediated many early disagreements between colonists and other Indian tribes, with a territory stretching roughly from the Massachusetts border with Vermont and New Hampshire, northward to the rise of the White Mountains in New Hampshire. The Western Abenaki (Sokoki) tribe lived in the Green Mountains region of Vermont but wintered as far south as the Northfield, Massachusetts, area. The (Sokoki) tribe migrated to Odanak, Quebec following the epidemics and the wars with the settlers but returned to Vermont. 1614–1636: Dutch and Puritan settlement In 1614, Dutch explorer Adriaen Block became the first European to chart the Connecticut River, sailing as far north as Enfield Rapids. He called it the "Fresh River" and claimed it for the Netherlands as the northeastern border of the New Netherland colony. In 1623, Dutch traders constructed a fortified trading post at the site of Hartford, Connecticut, called the Fort Huys de Hoop ("Fort House of Hope"). Four separate Puritan-led groups also settled the fertile Connecticut River Valley, and they founded the two large cities that continue to dominate the Valley: Hartford (est. 1635) and Springfield (est. 1636). The first group of pioneers left the Plymouth Colony in 1632 and ultimately founded the village of Matianuck (which became Windsor, Connecticut) several miles north of the Dutch fort. A group left the Massachusetts Bay Colony from Watertown, seeking a site where they could practice their religion more freely. With this in mind, they founded Wethersfield, Connecticut, in 1633, several miles south of the Dutch fort at Hartford. In 1635, Reverend Thomas Hooker led settlers from Cambridge, Massachusetts, where he had