to Grey Fox
After I wiped the Romans from my island I started trading techs and managed to get about 3 techs behind the tech leader.
I decided to invade Aztecs with a load of cavalry, got 2 cities and then made peace. I intended to declare war a few turns later, take a few cities and make peace again just the way i got the romans. This also keeps the war weariness a bit down. But all went different. The indians started a war with me and they had MPP with the other main landers and in 2 turns i was at war with everybody but the aztecs. The war weariness made all my cities go into civil unrest after a few turns so I had no option than to pay for peace with everybody. After this I only wanted revenge and smash the indians.
After making MPP with some other civs on the main island i started a war. I made peace with the indians but the others didnt which gave me the opportunity to get back in the tech race. After a while i was tech leader and there were only 4 civs left on the island. When I could build tanks I shipped about 25 over to the main island and got a right of passage with Indians. I positioned my troops and razed three cities. This turned out to be a mistake cause I got lots of civil unrest being the aggressor and I lost all my luxuries in the proces ( i got them from the indians). I had to make peace again without really hurting the indians.
Then i raced for modern armor and mech inf. I got mech inf first, and when i reached synthetic fibers the other just got comps and started building their first few mech infs. I upgraded all my tanks to modern armor ( about 90 ). Payed the indians for right of passage again, positioned my troops and razed his 10- 15 oldest cities in one turn. That same turn i made peace and colonized all the luxuries. This worked great for the war weariness. Because i had peace before the end of the turn i had no civil unrest, and the luxuries even boosted my popularity to 80%. It was only 65% when I started the turn, and was 22% during the war.
I'm now on my way with about 25 modern armor to conquer some chinese cities and I plan to use the right of passage strategy again.
Its about 1860 in my game so i think i'll manage to get a conquest victory before 2050. When invading the main continent i would always go for razing the conquered cities and not taking them. This way you will never have cities reverting culturally and you dont need any troops to defend them so you can take way more land in a short time.
I think getting MPP with civs on the main island is critical to win the game. This way you'll be able to start wars between them which wil give you the opportunity to develop faster. When they are warring on their island they wont be so keen to expanding or fighting on your island too.
Hope this helps