What would be the effects of a French victory in the Seven years War in South America

I've seen a lot of posts talking about France winning the seven years war, but I have yet to see any that mention the effects it would have on the south american nations such as Colombia, Brazil and Argentina.
 
Intresting question! It is hard to know,though, since those nations were not independent, nor was the notion of independence even in the cards.

Here are some things closer to the end of the war that might have been affected:

- IOTL the French settled the "Isles Malouines" (Malvinas/Falklands) with French Canadiens soon after the war. If they win, they might not do it, since these settlers would have prefered to stay in Canada (as most Canadiens did IOTL even after the British took over). Would the English still settle in Port Egmont if the French don't establish a colony in port Louis? Would Spain still expell the English by force (bringing both nations at the brink of a war around 1770) if it doesn't have a colony of its own in the islands (the one the French established and later gave to them after Spanish protested before the French court)?

- What was Portugal's possition? Would they be weakened? If so, would these affect the military conflict between Spain and Portugal in the River Plate Bassin over Colonia do Sacramento in modern Uruguay?

- May a victorious France try to grab Buenos Aires from Spain ss the British did in 1806 or would their good relations with Spanish Court make this unlikely? Could Britain try instead, as a way to try to compensate for her losses?
 
IOTL Spain won the war in South America but returned all the gains to Portugal in the Treaty of Paris, that said, the conflict over the Platine region continued until the 19th century with a series of treaties that never really solved the issue until the independence of Uruguay.
 
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