The start of tensions between the Thirteen Colonies and Great Britain led Great Britain to draft the Quebec Act in 1774, a constitution favourable to the Canadiens.
While the Quebec Act appeased the Canadiens, it aroused discontent among the Thirteen Colonies which started a war against the mother country the following year.
The peace treaty which forced Great Britain to recognize the independence of the United States in 1783 also led to several changes for the Province of Quebec. One of the most critical changes was the mass arrival of Loyalists who were colonists from the Thirteen Colonies and who wanted to remain loyal to the British Crown.
To find out more about the American Revolution and the Quebec Act, check out the following concept sheet:
The Battle of Yorktown, a decisive battle of the American Revolution