Well, okay, you'll get Portsmouth, but you'll never get farther than that.
My advise on order of killing people:
1. Kill the Netherlands in the first 5 turns
2. Naples
3. Spain, Portugal, Gibraltar
4. Steamroll through Prussia and Austria
5. Invade Russia, hopefully fare better than real-world Napoleon
6. If you haven't won yet, invade Ottomans.
Just leave Britain alone, it's far easier to conquer the mainland.
@Overseer: Indeed- it's impossible to invade France, as just like AI Britain, they're too strong. The AI unimaginably overuses the "Draft Citizen" button in this scenario.
If you do play as Britain or France, a good strategy is to, on turn 0, trade the tech you have that no one else has to everyone else and get a huge coalition against your enemy, plus enough gold to upgrade all your musketmen. This is especially necessary for France, as you want to be able to fight wars when you want to fight wars, not when Britain gets the rest of Europe to declare war on you.
As for when you're Britain, the AI is so bad at invading across water that defense is almost pointless.
