Abu Muslim al-Khurasani vs Choe Yeong

Abu Muslim al-Khurasani emerged as the leader of the Abbasid revolutionary movement in Khorasan. He organized and mobilized a diverse coalition of disaffected groups, including Arabs, Persians, and Shia Muslims, against Umayyad rule.

Abu Muslim's forces, under the command of Qahtaba ibn Shabib, defeated the Umayyad army at the Battle of the Zab in Iraq. This victory led to the fall of the Umayyad Caliphate and the establishment of the Abbasid Caliphate.

After the Abbasid victory, Abu Muslim was appointed governor of Khorasan, the heartland of the revolution. He ruled the province with near-autonomous power, building a strong army and administering the region effectively.

Caliph al-Mansur, fearing Abu Muslim's growing power and popularity, lured him to the court and had him executed. This act eliminated a powerful rival but also sparked rebellions in Khorasan and other regions.

General Choe Yeong led Goryeo forces to repel the Red Turban rebels who had invaded from China. He recaptured the capital Gaegyeong after it fell to the rebels, restoring order and defending the kingdom.

Choe Yeong led successful campaigns against Japanese wokou pirates who raided Goryeo's coasts. He strengthened coastal defenses and destroyed pirate bases, reducing the threat to coastal communities.

Choe Yeong opposed General Yi Seong-gye's decision to withdraw from the Yalu River campaign against Ming China. He was captured by Yi's forces during the coup at Wihwado Island and later exiled.

After being captured and exiled, Choe Yeong was executed on orders of Yi Seong-gye. His death removed the last major obstacle to Yi's rise to power and the eventual founding of the Joseon dynasty.