When the Japanese empire was dismantled at the end of World War Two, Korea fell victim to the Cold War. It was divided into two spheres of influence along the 38th parallel. The Americans controlled south of the line - the Russians installed a communist regime in the north, later ceding influence to China.
When employers hire for a job they most likely will ask question to see if you have knowledge on the company your trying to work for including what the job you applied for Antilles