Final answer:
The Letters from a Farmer in Pennsylvania were written as a response to the imposition of taxes by the British Parliament on the American colonies. John Dickinson argued that the taxes were unconstitutional and violated the rights of the colonists.
Step-by-step explanation:
The Letters from a Farmer in Pennsylvania were written in response to the imposition of taxes by the British Parliament on the American colonies. John Dickinson, the author of the letters, argued that the taxes were unconstitutional and violated the rights of the colonists. He believed that the colonists should have the right to govern themselves and have representation in the decision-making process. The letters were instrumental in mobilizing public opinion against British taxation policies and were an important precursor to the American Revolution.