How and why did English colonial policy change after 1763?

Prior to
1763, which marked the end of the
French and Indian War, the British government took a mostly
hands-off
approach to manage the affairs of their North American colonies. They felt that,
as
long as the colonists behaved well enough, they were happy to live and let
live. At times they
had attempted to take more direct control, such as with
instituting the short-lived Dominion of
New England and the Navigation Acts.
However, these attempts at British management were poorly
received by the
colonists who had come to expect a certain degree of independence from the

powers in London. As a result, the British mostly handled the colonies according to
their
unofficial policy of Salutary Neglect. This meant that they usually did
not strictly enforce
Parliament's laws that were meant to exert control over
the colonies.

This
all changed in 1763. The French and
Indian War had been expensive for the British. They were
left with large
debts to pay off and felt that, since the war was largely...