UMMM... SK didn't even exist before the US. Scrounged up peasants so we can kill each other. Typical American tactic. Long as Americans don't get their filthy hands dirty. It all comes down to.... Make excuses so US can INVADE KOREA! It's getting old.
Are you capable of understanding the written word of historical facts?
Korea was one country under the Japanese occupation.
The Soviets drove down from the North. The other Allies drove up from the South.
Just like in Germany - They stopped at an agreed on location.
Areas under Soviet occupation turned into communism.
Areas under US/Australia influence turned into a productive country.
Then you can look up what caused the Korean war (outside of your propaganda sources).
Maybe ask your parents. Ask them why there are two Koreas. This way you can listen to the spoken word.
You may be able to comprehend that more than the written word.