Duke of Zhou vs Theodosius I

After King Wu's death, the Duke of Zhou served as regent for the young King Cheng. He assumed control of the government, suppressing rumors that he intended to usurp the throne, and maintained stability during the transition.

The Duke of Zhou led a military campaign to crush the Rebellion of the Three Guards, a revolt by Zhou princes and Shang loyalists. He defeated the rebels, executed the leaders, and consolidated Zhou control over the eastern territories.

The Duke of Zhou ordered the construction of the eastern capital at Luoyi (modern Luoyang) to better administer the newly conquered eastern territories. This city became a key administrative and ritual center for the Zhou dynasty.

The Duke of Zhou is credited with codifying the Zhou ritual system, including rules for ancestral worship, court ceremonies, and social hierarchy. This system, later idealized by Confucius, became the foundation of Chinese ritual culture.

The Duke of Zhou is traditionally attributed with composing the 'Shao Gao' (Announcement of the Duke of Shao) and 'Luo Gao' (Announcement Concerning Luo) chapters of the Book of Documents. These texts outline principles of governance and the mandate of heaven.

After seven years of regency, the Duke of Zhou voluntarily relinquished power to King Cheng, who had come of age. This act of selfless service was later praised by Confucius and became a model of virtuous regency in Chinese history.

Theodosius I issued the Edict of Thessalonica, declaring Nicene Christianity the official state religion of the Roman Empire. All other forms of Christianity were deemed heretical, and pagan practices were increasingly suppressed.

Theodosius I ordered a massacre of thousands of citizens in Thessalonica in retaliation for the murder of a Roman general. The massacre led to his excommunication by Bishop Ambrose of Milan, and he later performed public penance.

Theodosius I issued a series of laws banning pagan worship, closing temples, and prohibiting sacrifices. The Olympic Games were abolished, and the Serapeum in Alexandria was destroyed. These actions accelerated the decline of paganism in the empire.

Theodosius I defeated the usurper Eugenius and his general Arbogast at the Battle of the Frigidus (modern River Vipava). The victory reunited the Roman Empire under a single ruler for the last time before its permanent division.

Upon his death, Theodosius I divided the Roman Empire between his two sons: Arcadius received the Eastern Empire and Honorius the Western Empire. This division became permanent, leading to the separate histories of the Byzantine and Western Roman Empires.