Transport in South Korea roads and various classifications below the national level. Almost all freeways are toll highways and most of the expressways are built, maintained and operated by Korea Expressway Corporation (KEC). The freeway network serves most parts of South Korea. Tolls are collected using an electronic toll collection system. KEC also operates service amenities (dining and service facilities) en route. There are also several privately financed toll roads. Nonsan-Cheonan Expressway, Daegu-Busan Expressway, Incheon International Airport Expressway, Seoul-Chuncheon Expressway and parts of the Seoul Ring Expressway are wholly privately funded and operated BOT concessions. Donghae Expressway was built in cooperation between KEC and
Multicultural family in South Korea to adapt to Korea and to support economical self-reliance. But the number of them has been increased and some of them acquired Korea nationality. Third, children of North Korean refugee family called 'saeteomin' as a defector. They acquire Korea nationality through naturalization. They have cultural problem because South Korea and North Korea have been formed different culture after the division of Korea into north and south. "What kind of cultural problems? Examples please." Immigrant Youth is an adolescents who come to Korea after growing in their own country because of their parent's remarriage with Korean or a children of International