Feudal

In a feudal form of government, the society is structure into three groups. At the top, the masters have absolute power; below them the warriors defend the masters' power in exchange for territorial control; and at the bottom are the masses who obey and pay due to everyone above.

Feudalism has a severe morale penalty until are built, and slow assimilation. It has bonuses to military technology but penalties to all others. It has the advantage of a large negative pick cost.