Korea, located on a large peninsula on the eastern coast of the Asian mainland, has been inhabited since Neolithic times. The first recognisable political state was Gojoseon in the second half of the first millennium BCE. From the 1st century BCE to the 7th century CE in the Three kingdoms period, the peninsula was dominated by the kingdoms of Baekje, Goguryeo and Silla, along with the Gaya confederacy.
This is a companion discussion topic for the original content at https://www.worldhistory.org/Korea/.