The Stamp Act was passed by the British Parliaments in 1765 which involves the imposition of direct taxes on the American colonies.
However, in their attempt to negotiate the Stamp Act and the notion that the Act was harsh, the American colonists demanded that they will not pay the taxes except they are part of the governing body which was having representatives in the British parliament to make the decision.
Hence, in this case, the correct answer is "No taxation without representation."
