That is the definition of treason.
That they never fought again
False. The first successful flight (via plane) was in Kitty Hawk, North Carolina.
The main way in which the French and Indian war draw the colonist closer together but increased friction with Britain is that after the war, the British raised taxes on the colonies in order to pay for the war--taxes which the colonists rallied around as being unfair. This was a major point leading to the Revolution.