Answer:
Explanation:
According to The History of China, the number of monks in China grew to over 500,000 during Mongol rule. ... Kublai Khan contributed to the growth of China's economy by reopening and improving trading routes. After Kublai Khan conquered the Sung Dynasty, he promoted agricultural and commercial growth within Yuan.
The awnser is b cause of their natural resources
The study of history allows us to learn from others mistakes, it allows us to make history while not making the same mistakes again.