Also, during extended period of peace, people's expectation of life increases, decent houses, good food, entertainment, self-fulfillment, etc etc. Send them al

Also, during extended period of peace, people's expectation of life increases, decent houses, good food, entertainment, self-fulfillment, etc etc. Send them all to war, half of them will come back happy to be alive. If you're a merciless dictator, that's definitely the easiest way to make your people happy.