Following the Seven Years' War (1756–1763), the British government was deep in debt. To pay a small fraction of the costs of the newly expanded empire, the Parliament of Great Britain decided to levy new taxes on the colonies of British America. Previously, through the Trade and Navigation Acts, Parliament had used taxation to regulate the trade of the empire. But with the Sugar Act of 1764, Parliament sought, for the first time, to tax the colonies for the specific purpose of raising revenue. American colonists argued that there were constitutional issues involved.