Let's say that the Napoleon never buys back Louisiana or that Jefferson decides not to buy it, and it goes back to Spain after the end of the Napoleonic wars. As I understand Spain was especially unpopular in Louisiana, and with Mexico, Colombia, Argentina etc. in revolt and revolution could Louisiana also declare independence?
There would be zero loyalist opposition since Spain has no real links to Louisiana unlike in Mexico or Peru or even the American Revolution where many people still wanted to be part of the 'mother country'. I think it feasible that the Spanish would just accept it and recognize Louisiana, rather than waste troops over territory that isn't even really part of their Empire and would be harder to conquer.
Now we have an independent Louisiana (presumably a Republic), how would the U.S react?
There would be zero loyalist opposition since Spain has no real links to Louisiana unlike in Mexico or Peru or even the American Revolution where many people still wanted to be part of the 'mother country'. I think it feasible that the Spanish would just accept it and recognize Louisiana, rather than waste troops over territory that isn't even really part of their Empire and would be harder to conquer.
Now we have an independent Louisiana (presumably a Republic), how would the U.S react?