Oil is an essential lubricant in your engine. It lets metal press against metal without damage. For example, it lubricates the pistons as they move up and down in the cylinders.
1 By the time of the Japanese surrender in August 1945, Korea was the second-most industrialized nation in Asia after Japan itself.  But the wartime mobilization of 1937-45 had reintroduced harsh measures to Japanese colonial rule, as Koreans were forced to work in Japanese factories and were sent as soldiers to the front.
Report Abuse. North Korea and South Korea were split in 1948 at the 38th Parallel. North Korea was established as a communist state and South Korea was a democratic state. North Korea invaded South Korea in 1950, and that's why the Korean War was fought. The war ended more or less in a stalemate, with North Korea pushed back to the 38th Parallel. Today that area's a demilitarized zone (DMZ).