Anytime democracy is brought to any people it automatically starts the war machine.
At the beginning everybody gets along, minding their own business. Then democracy comes down upon them. The people, wanting some opportunity for control, start dividing among themselves.
Whether it's by class, ideology, religion, race, geography, profession, or any other excuse. They begin to fight eachother for political power. It's almost as of there is something in democracy that breeds war among people.