<P> Letters from a Farmer in Pennsylvania is a series of essays written by the Pennsylvania lawyer and legislator John Dickinson (1732--1808) and published under the name "A Farmer" from 1767 to 1768 . The twelve letters were widely read and reprinted throughout the thirteen colonies and were important in uniting the colonists against the Townshend Acts . The success of his letters earned Dickinson considerable fame . </P> <P> While acknowledging the power of Parliament in matters concerning the whole British Empire, Dickinson argued that the colonies were sovereign in their internal affairs . He thus argued that taxes laid upon the colonies by Parliament for the purpose of raising revenue, rather than regulating trade, were unconstitutional . </P> <P> In his letters, Dickinson foresees the possibility of future conflict between the colonies and Great Britain, but cautions against the use of violence until "the people are fully convinced": </P>

What was the major idea of dickinson’s letters from a farmer in pennsylvania