What fueled a dramatic increase in westward migration in the 1760s?

The first British settlers in the New World stayed close to the Atlantic, their lifeline to needed supplies from England. By the 1630s, however, Massachusetts Bay colonists were pushing into the Connecticut River valley. Resistance from the French and the Indians slowed the movement westward, yet by the 1750s northern American colonists had occupied most of New England.

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Explanation:

The Puritans established the colony of Massachusetts Bay in 1630. They hoped to purify the Church of England, and then return to Europe with a new and improved religion. The Puritans had left England because they didn’t agree with the Church of England and they wanted to practice their own faith. They had originally intended to come to America so they could practice their own religion, purify the Church of England, and then return to Europe with this new and improved religion.