My take was that it was no alliances until turn 10. You can sell them whatever, which I didn't. They are your best source for early gold which I really don't need as Rome, but they are in my way are blocking 2 luxes, want war, and really just kinda aggravate me. If everyone else thinks it is unfair for me to fight the Celts, I will replay my turn, but the Carthaginians will make me pay in blood for any poor moves, so I think they are already plotting my demise.