Final answer:
Colonists boycotted British goods in 1765 a) to protest the Stamp Act, aiming to apply economic pressure on Britain and demonstrate their opposition to taxation without representation.
Step-by-step explanation:
The colonists began boycotting British goods in 1765 primarily a) to protest the Stamp Act.
The Stamp Act imposed a direct tax on the colonies for paper documents and was met with significant opposition.
Colonists were angered by what they perceived as taxation without representation, as they had no members in the British Parliament to voice their concerns.
The boycott of English goods was one of the most effective tools used by the colonists in getting the Stamp Act repealed, underscoring their desire to assert economic pressure on Britain.
The boycott was part of a larger strategy to fight against other unpopular measures as well, such as the Townshend Acts, and it eventually contributed to the mounting tensions that led to the American Revolution.