The better climate meant more resources and vegetation available for humans; therefore, the small mobile groups could begin to reside in one area. Agriculture was a turning point in early human life because humans began to alter their surroundings for survival
The human lineage was not always at the top of the food chain. Our ancestors met astonishing challenges in their surroundings, and were susceptible to disease, injury, and predators.
Christendom's penetration of the New World started after defeating Grenada, Isabella and Ferdinand. He wanted to start spreading Christianity everywhere so he wanted to start off with China.