D. It seems like the most reasonable answer. And there were also trading routes established during those times.
The Mongol Empire, with its peak size under the rule of Kublai Khan around the year of 1279, included parts of modern Russia in the North, modern day Korea, and modern China in the South on one end of the Asian continent. It stretched through the Asian continent all the way to modern day Hungary in Europe. It also included parts of the modern Middle East such as Iraq and Iran. The total area of the Mongol Empire in its peak was around 40 million km^2.
The way you worded the question is a bit odd, but it seems like the answer your looking for is the Japanese Empire.
Answer:
As a result the defense focused on the actions of the mob that threatened the soldiers rather on who shouted “fire”. ... He made clear that the soldiers were endangered and they had the right to fire in self-defense and that at most they were guilty of manslaughter and not of murder.
Explanation: