In 1553, France sent an expedition to North Atlantis, discovered the Hudson and James Bays, and founded colonies here, which were called Québec. Some decades later, these colonies would grow to reach the border of Louisiane. The capital was Fort d'Eau (OTL Toronto).
The French-Atlantean War (also called War of the Great Lakes) 1746-50 saw Denmark-Braunschweig and Britain fight the native Atlanteans and the French immigrants in Quebec. Still, the French minority would survive until the present, as in OTL Quebec.