Carthage wants me to become their protectorate (Romanii)

[Intranetusa]

So I was doing my typical Roman expansion, fighting the Spanish, some Celts, and skirmishes with Carthage.

I let them conquer much of Sicily and the Southern part of Italy. Then their diplomat offers that I become their protectorate.

Should I do it? I did a test and when I did, I instantly became chummy buddies with them, and my war with the Adeui ceased instantly, with Adeui being on good terms with me offering trade rights, alliances, etc




So I was thinking, if I don't have to pay them tribute, becoming their protectorate would be pretty awesome...I'll have years of peace, and I'll let them rebuild before I knock them down again.
Do you know if the human player becomes the AI's protectorate, would they break their own treaties and attack me again?

*btw, Carthage and the Greeks expanded nicely since I initially was playing as Greece and expanded like crazy, then switched to Carthage and expanded like crazy, then switched to Romanii.




Update: All slides:
https://img138.imageshack.us/slidesh...d=30470022.jpg


So I accepted their protectorate demands, but I managed to bargain 4000 minai from them. :D
Then I accepted a peace/trade proposal from Carthage's allies the Adeui.




Then the very next turn, I turned on my so-called benefactor, attacked their armies and slaughtered their general.



Treachery and deceit, it's the Romanii way! :D For da lulz...