score:9
The Indians of the North-East had become dependent on the Colonists for supplies of ball and powder for their newly favoured ranged weapon, the flintlock musket. Their supplies of these rarely exceeded a season's worth, and they had failed to stockpile additional reserves in preparation for the war.
Although the initial onslaught had chased the Colonists out of their outlying communities and into their larger towns, the war then became one of attrition in which the hostile Indians could only replenish ammunition through expenditure of the same, rarely making a net gain and never large. The Colonist militias also improved training and adopted the tactic of forming combined-nationality combat teams with their Indian allies.
Further, although the colonist suffered badly in the initial onslaughts, they still outnumbered the indigenous Indian population several times. It is estimated that there were 80,000 Colonists in New England in 1676 compared to only 10,000 Amerinidians (many of whom were friendly), with about 20% of colonists and 25% of Amerinidains being militia/warriors respectively.
This combination of increased combat effectiveness by the colonists, supply depletion for the hostile Amerindians, and being vastly out-numbered, doomed the rebels.
Upvote:4
There were several reasons. The first was that most of the LOCAL (to Massachusetts and parts of Connecticut) Indians had either been involved with King Philip, and were defeated, or conversely, had allied with the settlers, and were sharing the spoils of war. The second reason is that most of the damage was done in the initial part of the war against isolated settlements. A result of the war was than many settlements were abandoned, and people moved to major towns, where there were militias on guard.
A third issue might be why Indians from OTHER parts of the country didn't come in and try to drive the settlers out. Transportation (and communications) were poor in those days, and different Indian tribes seldom cooperated between themselves. There was no sense of "Native Americans" taking back "American" land. Most tribes only cared about what was going on within their immediate vicinity (e.g., within a modern American state).