Following the Treaty of Paris, which concluded the Seven Years' War in 1763, a Royal Proclamation was issued by George III, which established an appointed colonial government, and served as the basis for the constitution of colonial Province of Quebec until 1774. The Royal Proclamation limited the settlement of the southern Thirteen Colonies to the east of the Appalachian Mountains, with the areas west of the mountains being named as an Indian Reserve. As the proclamation was the first legal recognition by the British Crown of Aboriginal rights," some view the proclamation as a fundamental document for First Nations land claims and self-government in Canada. In 1774 the "Quebec Act" was passed, which saw the Crown guarantee the continued free practice of Catholicism, as well as the restoration of the French civil law legal system for issues relating to private law. The Royal Proclamation of 1763, along with the "Quebec Act", was regarded by American colonists as one of the Intolerable Acts that together eventually led to the outbreak of the American Revolution.