Alexios I Komnenos vs Wu Zetian

Alexios I Komnenos was defeated by the Norman army under Robert Guiscard at Dyrrhachium. The Byzantine forces were routed, and Alexios barely escaped. This loss allowed the Normans to occupy much of the western Balkans, though Alexios later recovered some territory.

Alexios I implemented a series of reforms to restore Byzantine power. He reorganized the army by relying more on foreign mercenaries, reformed the currency (the hyperpyron), and granted tax exemptions to the Church. These measures stabilized the empire after decades of decline.

Alexios I sent envoys to Pope Urban II at the Council of Piacenza, requesting military aid against the Seljuk Turks. This appeal contributed to Urban's call for the First Crusade at the Council of Clermont later that year, initiating the Crusader movement.

Alexios I cooperated with the Crusader army to besiege and capture Nicaea from the Seljuk Turks. The city was surrendered to Byzantine control, and Alexios used the Crusaders to recover key territories in Anatolia, though tensions later arose over land claims.

Wu Zetian was elevated from concubine to empress consort of Emperor Gaozong of Tang in 655. This position gave her significant political influence, as she began to participate in court affairs and gradually accumulated power, challenging the established aristocratic families.

After Emperor Gaozong's death in 683, Wu Zetian became regent for her son, Emperor Zhongzong. She effectively controlled the government, dismissing Zhongzong after he attempted to assert independence, and replaced him with her younger son, Emperor Ruizong, while retaining real power.

Wu Zetian proclaimed herself emperor, founding the Zhou dynasty and becoming the only female emperor in Chinese history. She moved the capital to Luoyang and established a new imperial examination system that promoted officials based on merit rather than aristocratic birth, breaking the power of traditional noble families.

Wu Zetian ordered military campaigns that reasserted Chinese control over the Western Regions, including the Tarim Basin and parts of modern Xinjiang. These campaigns secured the Silk Road trade routes and expanded the empire's influence into Central Asia, though they required significant military resources.

Wu Zetian elevated Buddhism to a state-supported religion, commissioning the construction of temples and statues, including the Longmen Grottoes' giant Vairocana Buddha. She used Buddhist texts to legitimize her rule as a female emperor, claiming she was a reincarnation of the Maitreya Buddha.

In 705, a coup led by court officials and generals forced Wu Zetian to abdicate in favor of her son, Emperor Zhongzong, restoring the Tang dynasty. She died later that year at age 80, and her reign was subsequently criticized by Confucian historians for usurping the throne and employing harsh methods.