What key events sharpened the divisions between britain and the colonists in the late 1760s and early 1770s?

There were several events sharpening the tensions between Americans and British. One of those, was the enactment of the Thowsend Acts, a series of regulations intended to control trade and tax the paper in the colonies; according to this regulation, all paper circulating in the colonies must have come from England, which was a way to control free press as well and certainly, it drove the revolutionary desires.

a stronger central government  

its what they are