This is my victory as Spain in the Napeolonic scenario; I unified the Iberian peninsula via wars against Portugal and Britain (for Gibraltar), then launched a massive invasion of Naples. At that point, Russia invaded and I asked France to join me; a stack of Russian troops seized a French city (Marseilles) which I took and didn't give back.

Then I liberated Greece from the Turks. I'm not sure how I came to possess those two Austrian cities; I think I got them when I decided I wanted Venice.
My first victory in the Napoleonic scenario was as Prussia a few years back, after reading my first book about Otto von Bismarck. I invaded Russia, fought there until my supply lines got too long to be practical, then declared peace. I then attacked Austria and achieved
Anchluss. France quickly fell to the allied powers, who then moved on to chew up her ally Spain. I joined them; my empire is all over the place as a result. Both of these were historiographic wins.
A domination win as Rome; as you might be able to tell, most of my land has come fairly recently. I had tanks ripping through the Yugoslavia/Balkans area at the same time a massive fleet of infantry units was moving toward Africa to take out Egypt and Arabia. Some of Greece was taken in the medieval era, with Legionnaires and Medieval Infantry; the rest was cavalry. Infantry and cavalry took out the Hittites in Asia Minor.
A domination win as Germany -- or as I had been calling it, "The People's Republic of Greater Europe". I played it on Marla's "A New Vision of Europe" map. Austria and the Alps, and the Netherlands became mine in the ancient era; the Italian peninsula, and the French area (France and Celts) fell in the medieval era. At the dawn of the industrial era, I took Spain and everything in continental Europe aside from the Ukraine/Russia area with cavalry. The rest of Europe and northern Africa fell prey to infantry and cavalry. Britain and Scandinavia could have fallen the same way, but I was bored and let them live until the end of the era, where I triumphed with bombers, Marines, and paratroopers. (Yep; I was bored enough to build
paratroopers. I should mention that I wasn't TRYING to take over the map until the industrial era, when the dominant country in Africa and the dominant civ in the Russia era both declared war on me. The same was true in the medieval era when Rome declared war on me.)
My current game as Rome on the same map. I'm trying to have a peaceful victory for once, so I've restricted my military activity to defending the Alps and guarding the Med. The AI is bogged down in a half-dozen wars, so they're slipping behind in tech. Western Europe's map has been dramatically changed in the last hundred turns or so. (First a massive alliance against France, then another against the Netherlands when the Dutch annexed all of France. Now the power in western Europe is shared between the Republic of Rome, Germany, and to a lesser extent Austria. We were allies in the French/Dutch take-down wars.)
Interestingly enough, I've fought two wars against Carthage, both in the ancient era. I'm thinking I should attack a third time just for historical accuracy.
I
do play on maps that aren't world maps. I'm Persia in this one, and I can pretty much end it anyway I see fit. I have 56% land (I think) and I have a healthy lead in technology. I've essentially abandoned this game, though, as there's no way I can lose -- save gifting all of my cities to my rivals.