Michael I Rangabe vs Shah Rukh

Michael I Rangabe was proclaimed emperor after the death of Nikephoros I in the Battle of Pliska. He was a son-in-law of Nikephoros and a member of the court. His reign was short and marked by military setbacks.

Michael I reversed the iconoclast policies of his predecessor and restored the veneration of icons. He also restored the rights of monks and monasteries that had been persecuted under Constantine V. This aligned him with the iconophile faction.

Michael I led a Byzantine army against the Bulgars under Khan Krum at Versinikia. The battle ended in a decisive Bulgarian victory. The Byzantine army fled, and Michael's reputation was severely damaged.

After the defeat at Versinikia, Michael I abdicated the throne and became a monk under the name Athanasios. He spent the remainder of his life in a monastery, avoiding further involvement in politics. He died in 844.

After Tamerlane's death and a period of civil war, Shah Rukh emerged as the ruler of the Timurid Empire, based in Herat. He defeated his rivals, including his nephew Khalil Sultan, and consolidated control over Persia and Central Asia.

Shah Rukh patronized the arts, architecture, and literature, making Herat a center of the Timurid Renaissance. He commissioned the construction of mosques, madrasas, and libraries, and supported artists like the miniaturist Kamal-ud-din Behzad.

Shah Rukh reestablished diplomatic and trade relations with Ming China, sending embassies and restoring the Silk Road. This facilitated cultural and economic exchange between the Timurid Empire and East Asia.

Shah Rukh led multiple campaigns against the Qara Qoyunlu (Black Sheep Turkomans) in western Persia and Iraq. He defeated them at the Battle of Alashkert in 1421, but the conflict continued intermittently, draining Timurid resources.

Shah Rukh died in 1447, leading to a succession struggle among his sons, including Ulugh Beg. His death marked the beginning of the decline of the Timurid Empire, which fragmented into smaller states.