The Constitutuion can be changed by

The United States Constitution describes the process whereby the Constitution, the nation's frame of government, may be altered. Under Article V, the process to alter the Constitution consists of proposing an amendment or amendments, and subsequent ratification.

Explanation:

The Qin dynasty lose the mandate of heaven through uprisings caused by the harsh policies of legalism.

Option D

Explanation:

The Mandate of Heaven has its origins during the Zhou Dynasty. It is an ancient concept whereby the emperor must be sufficiently virtuous as per the mandate to rule. In case he fails to meet the mandate, he must forfeit his right to rule.

As the Zhou Dynasty began losing its control and the warring states of China were united by Qin Shihuangdi. The Qin Dynasty lost the mandate quickly their rule was harsh and the policy of legalism was unpopular among the masses hence they faced uprisings which led to their fall.