PC: Britain takes all of New France in the War of the Austrian Succession

Seeing as this happened a decade later in the Seven Years' War, I'm wondering if could have happened then. What effects would this have? Would there be a Proclamation of 1749 or something to that effect? Would more colonies be founded west of the Appalachians? Would this be enough to avert the American Revolution? What other knock-off effects would this have?
 
Seeing as this happened a decade later in the Seven Years' War, I'm wondering if could have happened then. What effects would this have? Would there be a Proclamation of 1749 or something to that effect? Would more colonies be founded west of the Appalachians? Would this be enough to avert the American Revolution? What other knock-off effects would this have?

The most interesting question is : how ?

I mean that the population in british colonies was much lower in 1740 than it was 15 years later. So you have a much higher prospect of successful defense for the french and their Indian allies.
 
More plausible than you might think.

OK, first have the Austrians not get their butts kicked in the Netherlands and Italy. On the Rhine front, the Austrians overrun French Lorraine and Normandy in a counterattacker after a successful defense of the Netherlands (defeated armies are always easy to chase away). The Pragmatic Allies now have a lot of maneuvering room in captured territory. The British can send another 3,000 troops from the European theater to the New World, where they were already winning at Lousiville and had threatened the Ohio area. This little "boost" will give them what they need to take land, and with Austrians and Savoys stalemating the Spanish and the French having an epic fail, they can't trade European land for their colonies back.

OK, minor problem. I think the Duke of Marlborough, one of GB's best commanders, is dead. And Austria had an epic fail on leadership, at least he British had good ones but not as good as Maréchal de Saxe.
 
IOTL Britain planned an expedition to capture Québec in 1747, but it was cancelled, out of fear of a French invasion. You might need to change the naval situation, or make France less successful in its invasion of the Austrian Netherlands, for the expedition to go ahead.

Of course, this expedition also needs to be successful once it reaches New France; the 1690 expedition was defeated, and the 1711 one was shipwrecked before it reached Québec.
 
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