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.
The annexation of Korea by Japan was set up in the JapanâKorea Treaty of 1910, which was never actually signed by the Korean regent, Gojong. Imperial Japanese rule over Korea ended in 1945, when American and Soviet forces liberated the peninsula. In 1965 the unequal treaties between Joseon-ruled Korea and Imperial Japan, especially those of 1905 and 1910, were declared already null and void at the time of their promulgation (i.e.