Taxes. It was one of the primary causes of the American Revolutionary War.The expensive Seven Years War (also known in part as the French and Indian War) left England financially strapped. So they turned to British colonists to help replenish England’s coffers, after all, part of this engagement was fought on American soil (in present day United States and Canada) on behalf of those colonists—to protect them and allow them to expand westward.Ironically, the duty on sugar and molasses was actually reduced during this time, however, with stricter enforcement, colonists ended up paying more.