This act was passed to assert the authority of the British government to tax its subjects in North America after it repealed the much-hated Stamp Act.March. The Declaratory Act stated that Parliament had complete control over the governing of the colonies in "all cases whatsoever.A complete guide to Townshend Acts and their impact, in Boston. The purpose of the Declaratory Act of 1766 was to affirm that Great Britain had complete authority to tax its American colonies. In general the act is descryibed simply as a theoretical gesture or political tactic to ease the passage of the Stamp Act. Colonial indignation over the acts was expressed in John Dickinson's Letters from a Farmer in Pennsylvania and in the Massachusetts Circular Letter. The repeal of the Stamp Act did not mean that Great Britain was surrendering any control over its colonies. Each form that provides a blank space will have instructions on how to fill in the blank. The American Colonies Act 1766 (6 Geo. 3. c. Below is a listing of declaratory statements.