After the Mongol Invasions of Korea, The Golae dynasty had a lot of inpact by Mongol culture until the King called Gon-Ming-King had became king. And he saw The Mongol empire was not as strong as they thought after seeing the Mongols. So, they decided to declare independence and attacked Ssangseong General Administrative Office, which Mongols took after the war and which is now North Korea's South Hamgyong Province. But as many people didn't like the king's move after declaring independence. So Gon-Ming-king was killed. 

After that, The entire history has changed. The once great Mongol Empire fell and Ming-Dynasty ocuppied China. And at that time, the new Golae goverment, which was loyal to Mongol's than the Ming dynasty decided to attack thre Ming dynasty. As there were to opposing partys. One was to be friendly with the new Ming dynasty, since they have tooken over China and the Mongols wereweak compared to them, and they already got independence from Mongols, which was lead by Yi Seong-gye and Jeong Do-jeon. And the other side was to still be allys with Mongol, which was leaded by a person named Choi Young. When Yi Seong-gye was forced to go, he refused by for reasons.

 One was that a small country could not invade a big country. 

The second reason was lauching a military campaign during the summer was to hot for the soilders. The third reason was that it will rain soon, weaking the army. 

The final reason was if they go for their glourious campain of the Ming dynasty, the Japan pirates will attack them from the South, but since all armys will be up north, no one could stop the Japan pirates. But these four reasons were all refused, and he was forced to go. But as he reach the Ming-Joseon border which is now Wee-Hua-island, it started to rain and Yi Seong-gye said to retreat but the goverment refused so he turned the horse's head and attacked the Golae goverment and took countrol. The opposing party and it's leader, Choi Young was killed and Yi Seong-gye took control of the new goverment. But at thsi time, the goverment was splited. 

The two parts were first, leaded by Yi Seong-gye said to make a new goverment, while the other party said to just keep the Golae extistent but change its law. The two sides fought and Yi Seong-gye's party won. So they made a new goverment called Joseon dynasty. And they changed their capital to Han-Yang(Seoul) because their were still many people who wanted Golae return back in Gaesong, Golae's capital. And the Joseon Dynasty was formed and contined it's history forever I mean 500 years. 

I feeled so bad that Golae dynasty collapsed. But I was also happy that a new, proper goverment was taking control. And I was happy because the 4'th king of Joseon, Sae-Jong made the Korean language which is used today on Korea.