King Taejo of Goryeo vs Wu Zetian

Wang Geon (Taejo) overthrew the Later Goguryeo state and established the Goryeo dynasty, with its capital at Songak (Kaesong). This marked the beginning of a new era in Korean history.

Taejo married women from powerful local clans to secure their loyalty and integrate regional powers into the Goryeo state. This policy helped stabilize the new dynasty.

Taejo completed the unification of the Later Three Kingdoms (Later Goguryeo, Later Baekje, and Silla) under Goryeo rule. This ended the period of division and established a unified Korean state.

Taejo issued the Ten Injunctions, a set of political guidelines for his successors. These stressed the importance of Buddhism, diplomacy with China, and avoiding internal conflict.

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.