The British Empire had gained supremacy in North America with its victory over the French in 1763. Almost all of the North American territory east of the Mississippi fell under Great Britain’s control, and British leaders took this opportunity to try to create a more coherent and unified empire after decades of lax oversight. Victory over the French had proved very costly, and the British government attempted to better regulate their expanded empire in North America. The initial steps the British took in 1763 and 1764 raised suspicions among some colonists about the intent of the home government. These suspicions would grow and swell over the coming years.