Look at all of world history for a start. In the modern world, the population is put through 9 or more years of indoctrination during formative years to confor

Look at all of world history for a start. In the modern world, the population is put through 9 or more years of indoctrination during formative years to conform to a different system. Before then it was have as many children as you can, because when they become adults they can have no stronger allies than their brothers.