The Pequot War was a conflict that took place in 1636 and ended in 1638 in New England, between the Pequot nation and an alliance of the colonists from the Massachusetts Bay, Plymouth, and Saybrook colonies and their allies from the Narragansett and Mohegan nations. The war concluded with the decisive defeat of the Pequot. In an event called the Mystic massacre, English colonists of the Connecticut Colony and their allies set the village of Pequot Fort ablaze, blocked the exits, and shot anyone trying to escape. At the end, about 700 Pequots had been killed or taken into captivity. Hundreds of prisoners were sold into slavery to colonists in Bermuda or the West Indies; other survivors were dispersed as captives to the victorious nation.
The Treaty of Hartford of 1638 sought to eradicate the Pequot cultural identity by prohibiting the Pequots from returning to their lands, speaking their tribal language, or referring to themselves as Pequots. The result was the elimination of the Pequot nation as a viable polity in southern New England, and the colonial authorities classified them as extinct. Survivors who remained in the area were absorbed into other local nations; however, a western band retained sovereignty in Connecticut and are today a Federally recognized tribal nation.