Sweyn Forkbeard vs Yeonsangun of Joseon

Sweyn Forkbeard led a rebellion against his father, King Harald Bluetooth, forcing him into exile. This uprising was driven by opposition to Harald's Christianization policies and centralized rule, and it resulted in Sweyn seizing the Danish throne.

Sweyn Forkbeard launched a full-scale invasion of England, leading a Danish fleet. He conquered large parts of the country, forcing King

After his successful invasion, Sweyn Forkbeard was crowned King of England in late 1013. He ruled England for only a few weeks before his death in February 1014, but his conquest paved the way for his son Cnut the Great's later rule over England.

Sweyn Forkbeard died suddenly in Gainsborough, Lincolnshire, in February 1014, after ruling England for only about five weeks. His death led to the temporary restoration of

Yeonsangun ordered the execution of several Sarim scholars who criticized his rule and his mother's status. This purge marked the beginning of his tyrannical reign and intensified factional conflict.

Yeonsangun launched a second, more brutal purge, executing hundreds of officials and scholars. He targeted those involved in his mother's death and any perceived opposition, creating a climate of terror.

Yeonsangun abolished the Office of Censorship (Saganwon) and the Office of the Inspector General (Saheonbu), removing checks on royal power. This allowed him to rule without restraint.

Yeonsangun was overthrown in a coup led by court officials and military commanders. He was deposed and exiled to Ganghwa Island, ending his tyrannical reign. His half-brother Jungjong was installed as king.