Answer:
By making the written word available.
Explanation:
Before the printing press, it was required to manually read and copy books to make more of them. This made books rare enough to be limited to the church and nobility. As literacy rates spread and books were more available due to the press, information traveled further and further.
The answer is A let me know if you need further explaining
The development of agriculture allowed for previously nomadic tribes to settle on one land for an extended period of time.