In most empires, trade is important as it is a vital interaction for every country in the world. Without trade, countries would have to provide their own resources for every aspect in their daily life. Take for instance items such as food, clothing and technology.
The Hans dynasty retains centralized burueacracy and unified political system of the Quin but adopts and grafts upon this the Confucian view that government should be run by educated, ethnical men.
Answer:
It prohibited Japan from having an army
Explanation:
The answers are 2, 3, 4, and 6.