So I heard they are pretty much thesame as vassal, client states, whatever you name 'm. Basically they have no own diplomatic will and are your puppet state.However, in my game, they even refused to trade with me!! What is that? Shouldn't they have a choice? Also I couldn't bargain anything with them on the diplomatic screen.. also they give like 100 something a turn, so it's basically nothing. So I think it's not even worth it. But is it me or should they accept trade agreements without question?