Final answer:
The most effective non-violent protest in getting Parliament to cancel the tax laws was the boycotts imposed by the American colonists. The colonists refused to buy British goods, which put economic pressure on the British merchants and led to the repeal of the Stamp Act.
Step-by-step explanation:
The most effective non-violent protest in getting Parliament to cancel the tax laws was the boycotts imposed by the American colonists. In response to the Stamp Act, the colonists boycotted British goods, which put economic pressure on the British merchants. This pressure led to a change in Parliament's attitude and ultimately to the repeal of the Stamp Act.
The boycotts were an example of non-violent civil disobedience, which means intentionally breaking laws or regulations as a form of protest without using violence. In this case, the colonists refused to buy British goods as a way to show their opposition to the tax laws. Through the boycotts, the colonists demonstrated their economic power and forced the British government to reconsider their policies.
This protest was effective because it directly impacted British merchants' profits and thus influenced their interests. The boycotts showed that the colonists were united in their opposition to the tax laws and willing to make personal sacrifices to fight for their rights. The economic pressure generated by the boycotts made it difficult for the British government to ignore the colonists' demands, leading to the eventual repeal of the tax laws.