The factors that threatened the freeholder ideal in midcentury New England were that the rise in population resulted into less land that were available, parents also could only provide one child which must be with adequate inheritance.
The strategies used by farming families to preserve this ideal were the use of birth control on order to have smaller families, improved productivity of farms by using maize and potatoes to replace English crops, hacking of new farms from the forests of Vermont, New Hampshire, Massachusetts.
I suppose the Indians helped the French because the British took their land to make colonies. To get revenge, they helped the French for the British to lose the land.
Well it would be European explore such as people from Spain, France, Britain and places like that. There was also Christopher Columbus who was one of the reason for the native Americans being discovered and dying. However there was also Leif Eriksson Who was a Norse explorer that was believed to have led the first European expedition to North America 500 years before Christophers birth.