Transportation in South Korea is provided by extensive networks of railways, highways, bus routes, ferry services and air routes that criss-cross the country.

Development of modern infrastructure began with the first Five-Year Development Plan (1962–66), which included the construction of 275 kilometers of railways and several small highway projects. Construction of the Gyeongbu Expressway, which connects the two major cities of Seoul and Busan, was completed on 7 July 1970.

1970s saw increased commitment to infrastructure investments. The third Five-Year Development Plan (1972–76) added the development of airports, seaports. Subway system was built in Seoul, highway network was expanded by 487 km and major port projects were started in Pohang, Ulsan, Masan, Incheon and Busan.

Railroad network experience improvements in the 1980s with electrification and additional track projects. Operation speed was also increased on the main lines. Though the railroad was still more useful for transportation of freight, passenger traffic was also growing. There was 51,000 kilometers of roadways by 1988. Expressway network was expanded to connect more major cities and reached a combined length of 1,539 kilometers before the end of the decade.

South Korea ( listen), officially the Republic of Korea (Hangul: 대한민국; Hanja: 大韓民國; Daehan Minguk  listen), is a sovereign state in the southern part of the Korean Peninsula. The name "Korea" is derived from Goryeo, a dynasty which ruled in the Middle Ages (an initial "G" in Korean is pronounced like an English "K").

Its neighbors are China to the west, Japan to the east, North Korea to the north, and the Korea Strait to the south. South Korea lies in the north temperate zone with a predominantly mountainous terrain. It covers a total area of 99,392 square kilometers and has a population of almost 50 million. The capital and largest city is Seoul, with a population of 9,794,304.

Archaeological findings show that the Korean Peninsula was occupied by the Lower Paleolithic period.Korean history begins with the founding of Gojoseon in 2333 BC by the legendary Dan-gun. Following the unification of the Three Kingdoms of Korea under Silla 668 AD, Korea went through the Goryeo Dynasty and Joseon Dynasty as one nation until the end of the Korean Empire in 1910, when it was annexed by Japan. After liberation and occupation by Soviet and U.S. forces at the end of World War II, the nation was divided into North and South Korea. The latter was established in 1948 as a democracy, though political turmoil and times of military rule and martial law characterized much of the period until the foundation of the Sixth Republic in 1987.

Korea (/kəˈriːə/ kə-REE-ə; Korean: 한국 Hanguk [hanɡuːk] or 조선 Joseon [tɕosʌn] – (see etymology) is an East Asian region that is divided into two separate sovereign states — North Korea and South Korea. Located on the Korean Peninsula, Korea is bordered by China to the northwest, Russia to the northeast, and is separated from Japan to the east by the Korea Strait and the Sea of Japan (East Sea), and separated from Taiwan to the south by the East China Sea.

Archaeological and linguistic evidence suggest the origins of the Korean people might have been Altaic language-speaking people from south-central Siberia,^{[dubious – discuss]} who populated ancient Korea in successive waves from the Neolithic age to the Bronze Age. The adoption of the Chinese writing system ("Hanja" in Korean) in the 2nd century BC, and Buddhism in the 4th century AD, had profound effects on the Three Kingdoms of Korea.

The Three Kingdoms of Korea was first united during the Silla dynasty under the king Munmu of Silla. The united Silla dynasty fell to Goryeo Dynasty in 935 at the end of Later Three Kingdoms of Korea era. Goryeo was a highly cultural state and created the Jikji in the 14th century, using the world's first movable metal type printing press. The Mongol invasions in the 13th century, however, greatly weakened the nation which was forced to become a tributary state. After the Mongol Empire's collapse, severe political strife followed and Goryeo was replaced by the Joseon Dynasty in 1388.