The French and Indian War (or the Seven Years war)( ca1754 to 1760) depending from which side of the Atlantic we speak, via the Paris Treaty, left Britain with great territorial areas and huger debts . The Brits sought to saddle the Colonists with a significant portion of paying down this debt and thus that heated up the growing unrest between the colonies and the mother country.
Robert Middlekauf, in his bookThe Glorious Cause
. states (with some good pedigrees of historiicity), that the American Revolution actually began in 1763
with the signing of the Trety Of Paris, which negotiated the end and the spoils of the above Wars.
Because of several silly Brit campaigns of the French and Indian War (like Braddocks dumass March), the colonists got the idea that Great Britain could be beaten on the battlefield. All we hadda do was come up with strqtegies conforming to what the US had as an asset (namely its map size)