How did the Zhou justify their rule?

The Zhou created the Mandate of Heaven: the idea that there could be only one legitimate ruler of China at a time, and that this ruler had the blessing of the gods. They used this Mandate to justify their overthrow of the Shang, and their subsequent rule.

Explanation:

an aneroid barometer is different from a mercury barometer in that it provides readings that increase as air pressure increases.

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a bad leader