Well.
First, my burgeoning Empire of Reudh was under economic threat by virtue of having nowhere to expand to until we learnt how to sail, so I checked who was easiest to beat. We settled for the Roman Empire.
I enlisted Hatshepsut and her Egyptian soldiers to help me soften up some of Caesar's towns, so I could swoop in with my larger army. We took first Ravenna, then Arretium, then Pisae- poised to crush Rome, Hatshepsut swooped in with eight troops and captured it for herself while I was still sending troops into position.
No problem. She'll get hers eventually. Egypt will fall one day.
Alright, so then out of nowhere Genghis Khan and the Mongolian Empire declare war on me. I checked why, and it was over the fact that I had refused to cancel my deal with my Best Friend Forever, Russia. Blimey.
Army moves swiftly to take the mongolian towns to the west, of Turfan, Old Sarai and Karakorum. Left with one town, he had the temerity to ask for one of his towns back in a peace mission. Nope. I requested gold and he gave it. I crushed him anyway.
Took out his last catapult and captured the last Mongolian city on the planet. So ends Mongolia.
So we were all hunky-dory for the next coupla hundred years. Russians didn't like that I destroyed Mongolia, but all the other bonuses to happiness from our long trade agreement, our friendliness to each other, our open borders and evvythang evened that out.
Out of nowhere, Montezuma declares war on me, kills an obsolete chariot, then sues for peace after two of his units die attacking Karakorum. For his trouble, I refuse to allow peace. I have learnt how to sail now, and take all of Montezuma's towns but his last. He sues for peace again. He allows me to take his last town for a resource (deer, I think). His only units left are two warriors outside his town on the new continent, Xochicalco.
I learn Police State. Excellent. (-25% war weariness, produce new military units 50% faster, high upkeep). Swiftly swap to Police State. Catherine of Russia requests help against China. I agree. I capture Beijing and one other, Russia captures Shanghai. Mao sues for peace. I agree. Russia agrees. They have three cities left, two in the New World and one small one on a tiny island. We leave them for now.
My empire spans nearly an continent. We split the Egyptian empire in half through the middle by two of my towns (Moran and Elkazar), crippling their supply lines.
France, to my south and west, requests aid against the Egyptians. Not yet, King Louis. He gets all huffy. He's an advanced civ, with very little space. I surround him on all sides and he has only one port town. He has very rich resources, so he can play with the big boys and girls.
An Incan revolt takes place in one of the captured Aztec cities. Not good. Start amping up culture there.
Not good enough. A german revolt takes place a turn later, and the city joins Germany under Frederick.
I talk to Frederick. Say "Hey, declare war on everyone on earth except me and Catherine and Louis." He does so. Pisses off Japan enough that they declare war on me. However, as they haven't got anything better than caravels as their warships (I have Transport and Carriers by this stage) they're no threat. They're also unable to reach me overland as they are cordoned off by the German Empire.
Besides trifling occasional encounters between japanese caravels and my heavily armed ships, the war is uneventful.
Mao declares war on us again. Dumb dude. The Empire of Reudh crushes two of his three remaining towns, razing both as they are strategically unimportant. He begs for peace. I take his remaining money, leaving him with Kaifeng, the island city that cannot grow because of no resources.
France becomes peaceful with Egypt. Ten turns later, Egypt declares war on them again. I cancel Open Borders with Egypt, completely blocking their overland war effort, while France is allowed to cross my country. Egypt is forced onto the defensive. I take 500 gold from France for the privilege, which they don't like. Still, the aid I've given them softens that negative blow to relations.
I declare war on the Aztecs again, airlifting two tanks to Xochicalco to take out their two warriors (now upgraded to grenadiers). Aztecs are now extinct.
France begins to stop sending troops, as they take heavy losses from the well defended egyptian cities. I begin positioning troops at my border. Ten artillery, six tanks and about ten marines are stationed in Elkazar, poised to invade Memphis. Four battleships sit just outside the waters of Thebes. Four more are waiting near Rome. An aircraft carrier has four bombers near Heliopolis.
France stops their war effort, but are still in a state of war. Once my troops are in place, and I have Elkazar, Moran, Ranfort, Vortsooth, The Twelfth Bay and Variegation producing a goodly amount more troops, I declare war, and negotiate peace between France and Egypt. France agrees. They didn't get anything out of it anyway.
I start blowing the smithereens out of their city defenses. My tanks and gunships soften up roaming troops. Memphis falls after two turns. Rome falls after one more. Heliopolis' defenses are toasted. Thebes cannot mount a defense. I capture Heliopolis and Thebes a coupla turns later, destroying Egypt's presence on this continent. (They still have a town, Giza, on a largish island south of the Twelfth Bay, and another south of Beijing, Byblos.)
A russian revolt takes place in Beijing. Crap. Their cultural presence has overwhelmed Beijing and the other town. I move my troops out of the two towns to prevent them revolting. I order both Beijing and the other town to stop producing anything but culture, and eventually we force the borders back with music and happiness.
Giza falls and is razed. Byblos is being sieged. Byblos is razed. The germans capture an Incan city near my captured town of Tenochtitlan, and I use the time where the captured city has no borders to get Tenochtitlan to produce culture, expanding my borders closer to the Incans. Germany also captures the japanese town of Satsuma.
There's thirty turns left, it's 2020, and the Reudh Empire spans a full two continents. I don't think I'll have time to take out either Germany or Russia, as they're both too powerful and will put up a long war. France is a good buddy, and has towns in the New World and too many friends. Japan is too far away (Transports will take ~15 turns to get there, and there's no guarantee I could capture all remaining japanese towns in the remaining turns.) and the Incans are too close to achieving cultural overwhelming of german border towns.
Tl;dr, WARMONGER IS BEST MONGER.
Civilisation 4. Standard game.