The best answer is: By the abundance of excess food that led to a ruling class through the craftsmen guilds. The growth of agriculture resulted in intensification, which had important consequences for social organization. People lived in bigger cities and they started to be sedentary, and they could be able to start wandering in other subjects. The development of an agricultural system drove a political change. This period is know as the Neolithic Revolution.
With new found resources, more people wanted to join the sciences and arts. With that much resources into science, what we knew exploded into so much more.
