South Korean won
In 1962, he concluded the diplomatic relationship with Japan (한일수교) after Imperial Japanese rule of Korea (1910–1945). Japanese rule of Daeil Cheongoogwon (대일청구권) was used as seed money for economic development of Pohang Steel and the Gyeonbu Expressway to achieve Han river economic miracle. The poverty of 60 dollars income to 30,000 dollars strong economy of South Korea. Income went from 60 South Korean won to 30,000 South Korean won, representing a strong economy.