The Aztec Indians were a simple people. They relied on what they could grow and hunt as their primary food sources. Because it was easier to grow crops than to rely on animals, the Aztec diet was plant-based and focused on a few major foods. This diet provided the nutrients necessary to sustain life, but it is also a healthy way of eating that you use can as a model when designing your own nutritious eating plan.
Thats easy its because when they have kids and they die the kids will rule the same way which keeps the country running but if they dont have a heir then someone from the government will become king and mess up the government.