The people are of supreme importance; the altars of the gods of earth and grain come next; last comes the ruler. That is why he who gains the confidence of the multitudinous people will be Emperor... When a feudal lord endangers the altars of the gods of earth and grain, he should be replaced. When the sacrificial animals are sleek, the offerings are clean and the sacrifices are observed at due times, and yet floods and droughts come [by the agency of heaven], then the altars should be replaced.— Mencius
The Japanese government found the concept ideologically problematic, preferring not to have Divine political legitimacy that was conditional and that could be withdrawn. The Japanese Taihō Code, formulated in 703, was largely an adaptation of the governmental system of China's then Tang dynasty, but the Mandate of Heaven was specifically omitted. In later times, this need was obviated because the Imperial House of Japan claimed to be descended in an unbroken line from the Japanese sun goddess, Amaterasu. Nevertheless, while maintaining this role, the Japanese Emperor became politically marginalized in the Nara and Heian periods by powerful regents of the Fujiwara clan who seized executive control of state. Even though the Japanese imperial line itself remained unbroken after the eighth century, actual political authority passed through successive dynasties of regents and shōguns which cycled in a manner similar to that of Chinese dynasties. Even after the Meiji Restoration in 1868, when the Emperor was placed back in the center of the political bureaucracy, the throne itself had very little power vis-à-vis the Meiji oligarchy. Actual political power has passed through at least four systems since the Meiji restoration: the Taishō democracy, the militarists, the Occupation of Japan, and postwar democracy. The Emperor today is a political figurehead and not a ruling sovereign. It could be said the imperial line of Japan survived for so long precisely because it did not have control over the state, and that the turmoil of succession was projected onto a series of proxy rulers.
The prosperous Shang dynasty saw its rule filled with many outstanding accomplishments. Notably, the dynasty lasted for a considerable time during which 31 kings ruled over an extended period of 17 generations. During this period, the dynasty enjoyed a period of peace and tranquility in which citizens could make a good living. The government was originally able to control most of its internal affairs due to the firm support provided by the people. As time went on, however, the rulers' abuse of the other social classes led to social unrest and instability. The corruption in this dynasty created the conditions necessary for a new ruling house to rise —the Zhou dynasty. Rebellion against the Shang was led by Zhou Wu. They created the Mandate of Heaven to explain their right to assume rule and presumed that the only way to hold the mandate was to rule well in the eyes of Heaven. They believed that the Shang ruling house had become morally corrupt, and that the Shang leaders' loss of virtue entitled their own house to take over. The overthrow of the Shang Dynasty, they said, was in accordance with the mandate given by Heaven.
After the death of Qin Shihuang, first Emperor of the Qin dynasty, a widespread revolt by prisoners, peasants, and unhappy Soldiers inevitably led to the fall of the Qin dynasty due to its tyrannical practices. The establishment of the Han dynasty marked a great period in China’s history marked by significant changes in the political structure of the country. Under the Han emperors, significant changes were made in which the government introduced entrance examinations known as civil Service or imperial examinations for governmental positions. Additionally, the Han dynasty prospered economically through the Silk Road and other trading means.