Final answer:
The Shang kings and their dynasty fell due to a combination of factors, including internal discontent, military conquest, and the perception of corruption and sadism among the rulers.
Step-by-step explanation:
The Shang kings and their dynasty fell due to a combination of factors, including internal discontent, military conquest, and the perception of corruption and sadism among the Shang rulers. Their reliance on constant warfare and a religion centered on human sacrifices bred discontent among the population. This discontent may have fueled revolt against the Shang rulers, leading to their downfall. The Zhou dynasty eventually supplanted the Shang dynasty in 1045 BCE, borrowing extensively from its predecessors and justifying their conquest as the result of the heavens revoking the Shang's right to rule.