What are the Reasons why the 13 colonies attacked the St. Lawrence river at Montreal and Quebec?

The 13 colonies attacked the St. Lawrence River at Montreal and Quebec primarily to disrupt British supply lines and weaken their military presence in North America during the French and Indian War. Control over these strategic locations would facilitate easier access to Canada and potentially allow for the capture of vital resources and trade routes. Additionally, the colonies aimed to assert their independence and territorial claims against British rule, seeking to expand their own influence in the region. The attacks were part of a broader strategy to gain an upper hand in the conflict and ultimately secure greater autonomy.