- Extended the boundaries of Quebec: The act expanded the province of Quebec to include the Ohio River Valley and the Great Lakes region, which had previously been claimed by several colonies. This angered many colonists, who felt that the British government was giving too much land to the French Canadians.
- Guaranteed religious freedom to Catholics: The act allowed Catholics to freely practice their religion in Quebec, which was a significant departure from British policy at the time. This angered many Protestant colonists, who feared that the presence of Catholics would undermine their own religious beliefs.
- Established a new system of government: The act created a new system of government for Quebec, which was based on the French civil law system rather than the British common law system. This angered many colonists, who felt that the British government was imposing a foreign system of law on them.
- Contributed to the outbreak of the American Revolution: The Quebec Act was one of several factors that contributed to the outbreak of the American Revolution. The colonists were angered by the act's expansion of Quebec, its guarantee of religious freedom to Catholics, and its establishment of a new system of government. These grievances, along with others, led the colonists to rebel against British rule.