South Korea, officially the Republic of Korea (abbreviated ROK), is a sovereign state in East Asia constituting the southern part of the Korean Peninsula. Officially, its territory consists of the whole Korean Peninsula and its adjacent islands, which are largely mountainous. South Koreans lead a distinctive urban lifestyle, as half of them live in high-rises concentrated in the Seoul Capital Area with 25 million residents.
South Korea is a technologically advanced developed country driven by a highly educated and skilled workforce, having the world's eighth highest median household income, the highest in Asia. Globally, it ranks highly in personal safety, job security, ease of doing business and healthcare quality, with the world's third highest health adjusted life expectancy and fourth most efficient healthcare system.
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