They had very little supplies and financial backing for the war.
At the 1787 convention, delegates devised a plan for a stronger federal government with three branches, executive, legislative and judicial, along with a system of checks and balances to ensure no single branch would have too much power.
For the answer to the question above, the answer is The Mandate of Heaven. T<span>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 </span>Mandate<span> to justify their overthrow of the Shang and their subsequent rule</span>