B. Because the man lost everything and as a result of him losing everything he gains a higher trustability to people in Higher power, he could get everything back with everthying he gains from the people in higher power.
When a new family takes control, then a new dynasty begins. The Mandate of Heaven is what the Chinese people believed gave their rulers the right to be king or emperor. It meant that the gods had blessed that person with the right to rule. A ruler had to be a good and just ruler to keep the Mandate of Heaven.