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.
South Korea proclaimed their independence and the country of South Korea began 15 August 1948. North Korea followed shortly after, proclaiming their independence and the country of North Korea began 9 September 1948.Both South and North Korea are a part of the United Nations. In fact, the current Secretary General is Korean-born-Ban, Ki-Moon.o, for all intent and purposes, Korea as a single country ended in 1945, which is when the two North and South countries emerged.