Frequently Asked Questions for Newbies

[capnq]

10.6 The possible treaty states, starting from the "lowest" are: War, Non-Intercourse, None, Non-Aggression, Subjugation, Protectorate, Trade Alliance, Trade & Research, Military Alliance, Partnership.

10.6.1 Some AI have a limit on the highest treaty to which they will agree. Nothing you can do will change this.

I'm not sure this is correct; I think that limit is on what they'll offer, not what they'll accept.

Someone needs to verify how Subjugation and Protectorate work; I can't remember who has to offer the treaty. The game does not automatically check which side is "stronger" when the offer is made.