<span> The country was too weak and unstable to fight another </span>war<span> with a major European power.</span>
Answer:
This happened since Mongols were nomads, meaning that they didn’t have any home because they were always traveling. This caused a huge expansion, because they were always raiding settlements and stealing food and valuables.
Explanation:
I'd say pollution or disease.
The society that sought reform in China was known as the righteous fists of harmony
