What if as condition of military and economic assistance, America had to ally with France post independence? What impact would this have on Europe in the period of the French Revolution?
On the other side of things, I think the French of this era would be insulted at the suggestion that they needed the US' help for anything, especially fighting on their own turf. The US existed at their pleasure, not any other way around.
But France was quite upset with American neutrality. Their investment didn't pay off as much as they liked.
Early on in the French Revolution many Americans, especially Jefferson, greeted the revolution with great enthusiasm. So certainly the Royalists wouldn't be getting much sympathies, but the French Republic would welcome any allies it can get.
But France was quite upset with American neutrality. Their investment didn't pay off as much as they liked.
On Europe? Uhh...not much really. The US has no real capacity to influence the wars in Europe. In truth, this alliance is just like hanging a big "kick me" sign on the USA designed to provoke England. And no, I don't mean England will reconquer the colonies, because that's impractical. But it will give them a series of bloody noses and make them wish they'd chosen the sensible option of staying out of European politics.
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