Cnut the Great vs Muhammad I Tapar

After defeating Edmund Ironside at Assandun and Edmund's death, Cnut became sole king of England. He divided the kingdom into four earldoms: Wessex, Mercia, Northumbria, and East Anglia.

Cnut succeeded his brother Harald II as king of Denmark. He now ruled both England and Denmark, creating a North Sea empire.

Cnut traveled to Rome for the coronation of Holy Roman Emperor Conrad II. He secured agreements for reduced tolls for English pilgrims and merchants traveling through Europe.

Cnut invaded Norway and defeated King Olaf Haraldsson at the Battle of Stiklestad. Olaf was killed, and Cnut added Norway to his domains, becoming ruler of a North Sea empire.

Cnut died at Shaftesbury in Dorset on November 12, 1035. His death led to the disintegration of his North Sea empire, with his sons Harold Harefoot and Harthacnut contesting the English throne.

Muhammad I Tapar rebelled against his half-brother Sultan Barkiyaruq, claiming the sultanate with support from the Abbasid Caliph al-Mustazhir. This began a prolonged civil war that divided the Seljuk Empire.

Muhammad I Tapar's forces captured the city of Isfahan, the Seljuk capital, from Barkiyaruq's control. This victory strengthened his position and forced Barkiyaruq to retreat to western Persia.

Muhammad I Tapar agreed to a partition treaty with Barkiyaruq, dividing the Seljuk Empire. Muhammad gained control over the eastern provinces, including Khorasan and Transoxiana, while Barkiyaruq retained the title of sultan and western domains.

Following Barkiyaruq's death, Muhammad I Tapar became the sole sultan of the Seljuk Empire. He reunified the empire and began campaigns to restore Seljuk authority in the west, including against the Crusader states.

Muhammad I Tapar launched a major military campaign against the Crusader states in Syria, besieging the city of Edessa. Although he failed to capture the city, the campaign demonstrated renewed Seljuk military power and pressured the Crusaders.

Muhammad I Tapar died in Isfahan, possibly from illness. His death led to another succession crisis, with his son Mahmud II claiming the sultanate but facing challenges from his uncle Ahmad Sanjar, who eventually became the dominant Seljuk ruler.