Final answer:
The Zhou claimed that the Shang had lost the Mandate of Heaven, justifying their overthrow. They believed that the gods would withdraw their support if a ruler became corrupt or failed to govern well.
Step-by-step explanation:
The Zhou claimed to justify overthrowing the Shang by saying that the Shang had lost the Mandate of Heaven. According to the Zhou, the Mandate of Heaven was a divine right to rule granted by the gods. They believed that if a ruler became corrupt or failed to govern well, the gods would withdraw their support and transfer the Mandate of Heaven to a new ruler. Therefore, the Zhou claimed that the Shang had lost the Mandate of Heaven due to their corruption and unfairness.
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