There were quite a lot of consequences of Europeans coming to what is now Canada. For one, in the mid 1600s the outbreak of smallpox was disastrous, not just for the Algonquin but also for other First Nations. It caused many wars that wouldn't have happened if the Europeans hadn't come to Canada. Beavers were hunted, almost completely to extinction in many areas. These are only some examples of consequences that happened with European contact.