Thats right....So my conclutions is. The best civ to ally with, is the civ that has a lots of influence and recourses. The reason is that he has everything he needs, and can even get more civ's to join us because if his influence. Ex: This happen in my last game: I was in war with Egypt, the largest nation of the map. With help from the Japanese, they was close up to wipe out 2 of my allies.
So I decided to contact Persia, since they was the tech race leader, not the largest military nation, but he had the control of 15-20 luxuries and a huge amount of gold recourses, and because of that he was the nation with most influence. That agreement was very importent fore me, and changed the whole situation. Two turns after the agreement, he got 3-5 more civ's into our alliance against them. The deal was expensive, but it was really worth it. Even the Japanese turned over to our side(betraded the Egyptians), and it became a easy victory.
Note. It was the first game where the Zulu actually was really nice to me. He stayed by my side in hundreds of years, and in this case, he did not demand anything of me(he must have been sich

) . I belive it was beacause it was the fists game me and him really had inportent trades in both interest. I gave him lux, and he gave me coal and iron. So in the last games I have study the Zulu, to find out why he is so agressive. One of them is that he is allways backward in science/improvements, because his highest priority is the military. And thats why he somethimes treath his neighbours, with demand stuff from them fore free, because thats is his only way fore him to get techs. But if you actually manage to trade with him, then he suddendly can be nice(sometimes), and that impressed me. The bad with the zulu is that they are so slow to build trade routs, so in that way they are always a danger in the first part of the game.
Because of my tactic in this game, Persia will be hard to beat later in the game, but with some nukes/bombers, I belive it gonna be easy, since his land area is not that great
But anyway, it has been a interesting discussion, and I have learned alot, thanks
