Ruhollah Khomeini vs Theodosius I

Khomeini was exiled from Iran after criticizing the Shah's White Revolution and granting of diplomatic immunity to US personnel. He settled in Najaf, Iraq, and later in France, where he continued to organize opposition to the Shah.

Khomeini led a popular revolution that overthrew the Shah's regime. He returned to Iran in February 1979 and established an Islamic Republic based on his doctrine of Velayat-e Faqih (Guardianship of the Jurist), with himself as Supreme Leader.

Khomeini supported the seizure of the US Embassy in Tehran by student militants, who held 52 American diplomats hostage for 444 days. The crisis deepened the rift with the US, led to economic sanctions, and consolidated Khomeini's power.

Khomeini led Iran through an eight-year war with Iraq, which began with an Iraqi invasion. The war resulted in hundreds of thousands of casualties and massive economic destruction, ending in a stalemate. Khomeini accepted a UN ceasefire in 1988.

Khomeini issued a fatwa calling for the death of author Salman Rushdie for his novel 'The Satanic Verses', which he deemed blasphemous. The fatwa led to international controversy, diplomatic tensions, and attacks on Rushdie's translators.

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.