In 1637, the Pequots became the first native people to survive a genocidal massacre at the hands of European immigrants, in what would become the continental United States. 1666) located in southeastern Connecticut. The Mashantucket Pequots are a native Algonquin people who endured centuries of conflict, survival, and continuity on and around North America’s oldest Indian reservation (Est. About the Mashantucket (Western) Pequot Tribal Nation