Spain would never accept a French Florida. It sits right on the main trade wind from the Carib to Iberia.As I said, if Spain continues to advance in North Africa, then she may lose interest in maintaining any colonies in the South at all. Tunisia and Egypt are close at hand, and there is better infrastructure, and more favorable conditions for Europeans. So Portuguese-speaking Africans can become an analogue of the Boers.
You can still something like this (look only at the New World).
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