So, I'm turning over a fresh new leaf (literally) and am thinking about completely revamping this timeline. Please message me directly with any general suggestions, comments, or questions about this "new" timeline because I'm getting pretty tired
after attempting to respond to each single comment literally every single week, and the timeline's just not getting anywhere.
Anyway, here's what I decided to do. Gwanggaeto is not going to attempt to conquer North China (meaning the Wei), and the Wei nor any of the other Northern Chinese kingdoms are going to do so either. However, Gwanggaeto is still going to manage to conquer all of Manchuria, the Korean Peninsula, and Japan, while still managing to hand the throne over to Jangsu at the same time as in OTL. Jangsu is going to then sign alliances with the Wei, assuming that they are going to "unite" North China by the early 400's, and the Liu Song will be forced to sign treaties separately with the Wei and Goguryeo. This situation will then continue basically similar to that in OTL, until one of the later Goguryeo emperors/kings makes a second divergence from OTL by managing to invade and conquer the Wei and Xinjiang within 15-20 years after numerous years of training. This might then change history significantly when the Abbasids invade Central Asia, but I'll try to figure that out when I get there.
So by 750-800, Goguryeo will probably control Xinjiang, North China, Manchuria, the Korean peninsula, and Japan. They might then conduct diplomatic missions with India, South China, and Southeast Asia. However, Goguryeo will be quickly overthrown in 901, when Gung Ye manages to overthrow the emperor in a coup and remain in charge of a military dictatorship for 17 years, from 901 to 918. However, the military will be dissatisfied with his rule, and Wang Geon will overthrow him, become Emperor Taejo, and found the Goryeo dynasty.
Eventually, Genghis Khan is going to invade Korea after he unites his people starting in the early 1200's, and things will then become similar to OTL once again. However, the Mongols will never manage to completely conquer China, and Korea will manage to reclaim Xinjiang, North China, and the Korean peninsula, although I'm not sure about if Japan might declare independence.
And I'll worry about 1400-2000 later when I'll have the time to do so.
I hope this makes things much easier for everyone.
Anyway, here's what I decided to do. Gwanggaeto is not going to attempt to conquer North China (meaning the Wei), and the Wei nor any of the other Northern Chinese kingdoms are going to do so either. However, Gwanggaeto is still going to manage to conquer all of Manchuria, the Korean Peninsula, and Japan, while still managing to hand the throne over to Jangsu at the same time as in OTL. Jangsu is going to then sign alliances with the Wei, assuming that they are going to "unite" North China by the early 400's, and the Liu Song will be forced to sign treaties separately with the Wei and Goguryeo. This situation will then continue basically similar to that in OTL, until one of the later Goguryeo emperors/kings makes a second divergence from OTL by managing to invade and conquer the Wei and Xinjiang within 15-20 years after numerous years of training. This might then change history significantly when the Abbasids invade Central Asia, but I'll try to figure that out when I get there.
So by 750-800, Goguryeo will probably control Xinjiang, North China, Manchuria, the Korean peninsula, and Japan. They might then conduct diplomatic missions with India, South China, and Southeast Asia. However, Goguryeo will be quickly overthrown in 901, when Gung Ye manages to overthrow the emperor in a coup and remain in charge of a military dictatorship for 17 years, from 901 to 918. However, the military will be dissatisfied with his rule, and Wang Geon will overthrow him, become Emperor Taejo, and found the Goryeo dynasty.
Eventually, Genghis Khan is going to invade Korea after he unites his people starting in the early 1200's, and things will then become similar to OTL once again. However, the Mongols will never manage to completely conquer China, and Korea will manage to reclaim Xinjiang, North China, and the Korean peninsula, although I'm not sure about if Japan might declare independence.
And I'll worry about 1400-2000 later when I'll have the time to do so.
I hope this makes things much easier for everyone.