With the Aztecs (H/M), I am at turn 52 and I've just been building up. I am making a ton of money and am at around 60k constantly. I have looked at making an invasion army and decided that Cuahchiqueh are my best bet. They have 0 upkeep and have the same stats as Jaguar Warriors, plus they frighten nearby enemy units. I am proceeding to build several stacks (10 Cuahchique, 6 Eagle Warriors, 4 Aztec Archers in each). I think I will need 4-5 full stacks. I am preparing a navy of 4-5 boats with 5 merc cogs in each. I am going to invade The un-United Kingdom. I figure that's my best shot at having any chance of getting to 50 settlements. I need a nearly impenetrable base to launch raids on france. I thought about attacking N. Africa, but there will not be a lot of money in that. I also thought about attacking the Iberian Peninsula, but I am too vulnerable to land invasions as Grislok knows.