French Europe: How long does it last?

Let's say Napoleon had took over Europe. ( First French Empire, with Poland, and Denmark.) He beat Russia, but fail to take over England. How long does this French Empire last?
 
How beaten is Russia? Did Napoleon's invasion succeed and turn it into a Rheinbund-style puppet state or is it merely obeying Napoleon at the moment because he is powerful and resisting him would be counter-productive?

If it's the former, Napoleon's new order will last much longer than if it's the latter.

Either way, ethnic nationalist rebellions will occur on the Continent sometime, and the United Kingdom will be sending money and weapons to each and every one. The entire rest of Europe will become like Spain in the Peninsular War. Unless Napoleon grants genuine autonomy to his subjects in some kind of Continental federation (a highly unlikely step for a man like Napoleon I) I can't see his empire lasting more than a few decades after his death.
 
How beaten is Russia? Did Napoleon's invasion succeed and turn it into a Rheinbund-style puppet state or is it merely obeying Napoleon at the moment because he is powerful and resisting him would be counter-productive?

If it's the former, Napoleon's new order will last much longer than if it's the latter.

Either way, ethnic nationalist rebellions will occur on the Continent sometime, and the United Kingdom will be sending money and weapons to each and every one. The entire rest of Europe will become like Spain in the Peninsular War. Unless Napoleon grants genuine autonomy to his subjects in some kind of Continental federation (a highly unlikely step for a man like Napoleon I) I can't see his empire lasting more than a few decades after his death.

Hmm, i have French blood ( Chevalier) so let's go with the former.
 
So Davout is a king somewhere in ex-Russia :)

France has to look at what its focus is. If they have finally managed to get out of the habit of looking for new conflicts, then they have a good chance

Maybe Napoleon mellows in older age, or gets ill and his ministers run most things for him. The army commanders, especially if they have become kings (!) would be pressing for a more cautious long-term policy.

Britain was increasingly hard-pressed and if offered another Amiens-style peace after the defeat of Russia would probably be eager to grab it. The aftermath for Britain could be worse than OTL, with much greater Chartist-style agitation and maybe civil war looming, or lurking in the background

Best Regards
Grey Wolf
 
That's not good for the United Kingdom at all. With all the resources of the Continent behind him, sometime Napoleon will be able to build up his navy again, and when he does… goodbye, British independence, it was nice knowing you. Even if the first Napoleonic invasion of Great Britain fails, the second, the third et cetera might not, and Napoleon can sustain that sort of effort far more easily than the United Kingdom can.

But the point about the Peninsular War remains valid; Europe will be full of guerrillas. And it will also depend on Napoleon's policy in the rest of the world; if Napoleon is conscripting people left and right to go on grand campaigns in Africa, Asia et cetera that will make non-French Europeans much less willing to just live with the new order.

Still, I can't imagine it lasting to the end of the 19th century. In time, the industrial power of all the other nations of Europe (Russia, Spain, Germany et cetera) will rise and eventually the rulers of those places will decide to stop following France's orders and mobilise their subjects to overthrow the dynasty who put them (the rulers) in power in the first place.
 
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