The Osiris Child

Humanity is moving to overcrowded land, which will be the beginning of the chaos, the extermination of entire peoples, a pretext for war. In this case, those who survive has the power or will to make cautionary steps. The planet's resources are exhausted in a few decades, so people begin to act now.
The best minds in the land to send space expeditions and form colonies on other planets, thus giving the chance for the survival of new generations of earthlings. To maintain order at the populated territories need to maintain tight control, but this is the only way to achieve the desired objective.