Answer:
Because the system has warn out and decayed during the yuan dynasty we just did this lesson
Explanation:
by gaining a ton of land and exploiting the people on that land you get resources, right? and those resources are the ability to use that new land's ports, military, resources (goods and services), and culture. I hope this helped!
An oral history dictated by a soldier’s adolescent son since it is primary (first hand) evidence and he would be able to answer additional questions