Eventually, as the oil gets dirtier and dirtier, it will stop lubricating and the engine will quickly wear and fail. Don't worry, this isn't going to happen if you forget to change your oil one month and it goes over the recommended change interval by 500 miles. You would have to run the same oil through the engine for a long time -- many thousands of miles -- before it caused catastrophic failure.
The most pertinent questions regarding the split of the Korean peninsula are why did it happen and who was responsible for it? Japan was on the verge of surrender in 1945, and the USSR was advancing ahead through Korea, crushing the Japanese army when the news of Japanâs surrender broke out. The US at that point did not have a base in Korea and feared full takeover of the peninsula by the Soviet forces.
Originally Korea was a ruled by kingship, then Japan annexed Korea from 1919 to 1945. After Japanese surrender in 1945, the country was occupied by former Soviet Union and the US. There was discussion among winners of WWII about what to do about Korea.