well i think my biggests is probably happening right now. Im playing on Rhye's Earth Map 180x180 v1.5.biq, and right now i think i have 40% of the world. and its forever growing. why? because i turned off all victory conditions other than domination by mistake
the game itself didnt start off too well because germany had early attacked me (im celts) but i managed to end that first war with 3 cities lost, 4 gained (ie my 3 regained). i had the whole area of france and italy, and 2 cities on the UK. germany being slightly bigger than me still. Germany was my enermy all game long and i had to hit him back, which i did in great "style" later.
After making rather large settlements in Africa i became strong and took out the arabs with cavalry who was stuck with spearmen still.
from this point on i switched to fascism and drafted for about 20 turns (once every other turn) to make a large defence/resisitance queling force.
To beat the germans who was still strong, although not THAT good i made a plan called my market garden. and im supprise how well it worked! but then the cities in the middle wasnt defended as well as the outer ones.
Bombers redlined (or killed) all defenders and killed the rails (but not the roads) so i could land paras on hills and not have every tank in germany killing them the Paras took the cities, cutting the germans in half and stopping them supplying the front against the mongols.
This plan also greatly helped the cutting down of the rest of the forces, because the defenders of the front line cities came out to retake the 3 cities i had taken (but not yet reinforced) but my bombers killed/redlined ALL of them. From that point on its been a unstoppable steam roll, and its become a tad boring (hence i been playing this game for about 3 months on off).
The indians have since "fallen off" the map, and im just waiting on cleaning my new extention of celt land up before i start another war. Although MPP might cause issues, as inca just declared war on america, and i cant get over there too easy. plus land based bombers are stuck, although i do have 10cvs....
How did i make it so easy. Well i made them all poor. I made the best of science advantage, which was why i was weak and picked on early in the game, to make MASSIVE GPT, which made everyone poor, keeping there armies small, and old. Hell, later in the game i started GIVING Korea 400gpt just to help them against the mongols and Japan! lol and it seems to be working. only problem is when i fight them!
Enough of my chatting

Land owned now:
Whole of india (arrowed) and the ottomans, plus most of austrialia now mine
