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
South Korea alliance between the United States and Japan. Korea and Japan have had difficult relations since ancient times, but also significant cultural exchange, with Korea acting as the gateway between Asia and Japan. Contemporary perceptions of Japan are still largely defined by Japan's 35 year colonization of Korea in the 20th century, which is generally regarded in South Korea as having been very negative. Japan is today South Korea's third largest trading partner, with 12% ($46 billion) of exports in 2016. There were no formal diplomatic ties between South Korea and Japan directly after independence the end of World War II