History of science and technology in Korea such as the division of Korea and the Korean War that occurred right after its independence. It wasn't until the 1960s under the dictatorship of Park Chung-hee where South Korea's economy rapidly grew from industrialisation and the Chaebol corporations such as Samsung and LG. As of 2008 South Korea ranked 5th highest in terms of R&D. Park Kye-jung, CEO of Ace Electronics, won the Gold and Silver prizes for his invention of motor and motor-equipped gear at the 23rd Invention and New Product Exposition, he took the gold medal with his invention of a special device that converts vibrations from
Propaganda in South Korea of attacks by North Korea including the sinking of the South Korean navy frigate, ROKS "Cheonan". Popular South Korean films often show reunification themes with friendships or family ties across the north and south division. The film "Joint Security Area" (2000) was the highest grossing Korean film up to that time. The movie depicted a friendship between soldiers from the north and south along the DMZ. The popular war movie, "Tae Guk Gi", from 2004 depicted close brothers divided as they are caught in the Korean War. South Korea broadcasts radio messages toward North Korea with news and propaganda themes.