Ok I tried searching for this but don't find anything that applies so here goes... Playing Isabella/Spain, pretty low level. Trying for the first time to go for cultural, so kept only 3 cities (even though I cornered off half the pangea) Anohoo, friendly with everyone, then suddenly India America and Iroquois all declared war on me. Then in the history it says they "backstabbed" me. What does that mean exactly? Is the AI smart enough to trick me into being friends then attack me together!?