WI: Mongol official declares new Korean dynasty?

What if a powerful Mongol general or governor in Korea decided to declare a new dynasty?

Kind of a small domain for a Mongol, no?

John Fredrick Parker said:

Kind of a small domain for a Mongol, no?

Click to expand...

The Mongols seemed to like to set themselves on the traditional thrones of the nations they conquered. Who's to say an ambitious Mongol general wouldn't take the opportunity to do so in Korea?

Being irrelevent didn't stop the Chagatai Khanate from existing

You'd have to be more specific. To give you an idea, this scenario is an extremely loose approximation of what occurred OTL, as Yi Seong-gye, a Goryeo general who founded Joseon after taking power in a coup, was the son of Yi Ja-chun, who was a Mongol official of Korean ethnicity. On the other hand, an official who was ethnically Mongol would face extreme opposition from both the Mongol court (as a traitor/usurper) and the Korean court, given how Goryeo resisted the Mongol invasions for about 40 years, while Gongmin renounced all ties with the Mongols and essentially doubled the state's territory, then refused to ally with Biligtü Khan, who took control of the Northern Yuan in 1370, despite the fact that both rulers were of Korean descent, as the khan's mother, the Qi Empress, had been sent to Dadu in order to maintain close relations between the Yuan and Goryeo.

In addition, even if the Mongol official somehow managed to gain approval from the court in Dadu, the Koreans would be firmly opposed to such a maneuver, as Goryeo pressured the Yuan diplomatically for 20 years in order to reclaim territory in the northwest corner of the peninsula, which they eventually managed to successfully accomplish.