Why did chinese believe the tang struggled with crop failures and government problems?

a they had lost the mandate of heaven.

b they had poor agricultural practices.

c they were disorganized and lazy.

d they were corrupt and evil men.

The answer is letter A. Because of the belief of the Chinese of the Mandate of Heaven, their emperor was not able to boost their economic as well as the continuous problems in government. The Tang Dynasty decided to merge with Emperor Gaozu to improve the economic and political sectors during the Tang dynasty

Mandate of Heaven

Explanation:

The mandate is important because its about who can rule and who can get kicked  out and  so when the made corrupted everything fell including their lifestyle.

but whats the question? ?

explanation:

c. troops marched forward in close formation against newer, more accurate weapons