The guide that comes with PTW says each new Civ has a specific government that is preferred and one that is not. For example the Celts prefer Despotism and are opposed to the Republic.
Any ideas on what this means for gameplay? For the Celts will adopting another form of government make it tougher to maintain happy citizens? Are the other Civs likely to be more or less aggressive because of their preferred government types? More difficult to trade etc?
Depostism is nice until you've got enough income for monarchy, since I usually have a huge army to keep my more bloodthirsty neighbors away during the ancient age.
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"Every good communist should know political power grows out of the barrel of a gun." - Mao tse-Tung