what if Spain had sold Cuba and Puerto Rico to France in 1837?

irl in 1837 Spain was embroiled in the carlist war and was facing bankruptcy, to counter this the Spanish government seriously considered selling off some of its colonies. The French engaged in secret negotiations with them seeking to buy some but ultimately nothing went through.

But What if in this timeline Spain agrees to sell Cuba and Puerto Rico to France in exchange for monetary and military support against the Carlists?

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u/umok0 — 14 hours ago