1. What changes occurred after the Mongols conquered the Song dynasty?

After obtaining Xiangyang (modern Xianfan) in 1273, the Mongols gained access to the Yangzi River — and the chance to penetrate deep into Song territory. More and more Song land fell into Mongol hands, and the government moved further south.

Explanation:

The Mongols eventually defeated the Song land and naval armies and captured more than 100 ships. The Yuan dynasty created a "Han Army" (漢軍) out of defected Jin troops and an army of defected Song troops called the "Newly Submitted Army" (新附軍).

either b) they were often feared and despised by other native cultures. or

c) their obsession allowed them to coexist with many other native cultures because of their peaceful nature.

a case involving the laws of a single state.