Korea's Kingdoms in Sequence: Goguryeo, Baekje, Silla, Goryeo, Joseon

Korean history is frequently presented as a function of Chinese or Japanese history, which leaves the internal sequence — who ruled what, and in what order — oddly blank. The sequence itself is not complicated. Columbia University's Asia for Educators timeline gives Old Choson from about 300 BCE, a Three Kingdoms period running roughly from 50 BCE to 668 CE, United Silla 668–936, the Koryo dynasty 918–1392, and the Choson dynasty 1392–1897.

What is complicated is the dating around the edges, and one of those disputes is politically live today. Both are worth meeting head-on, because they are better lessons about how history works than a clean list would be.

The Three Kingdoms, and the Kaya question

Columbia's timeline gives Silla as 57 BCE–668 CE, Goguryeo as 37 BCE–668 CE and Baekje as 18 BCE–663 CE, with the Kaya confederacy at 47–562 CE in the south. Northern commanderies established by Han China are dated to roughly 108 BCE–313 CE, and a Samhan federation in the south to about 100 BCE–280 CE.

Several things follow. "Three Kingdoms" is a simplification that leaves out Kaya, a real and durable group of polities. The early foundation dates come from later chronicles and are traditional rather than archaeologically fixed. And the north of the peninsula was under Chinese administration for several centuries at the start of this period, which is part of why the region's history is contested.

UNESCO's Baekje Historic Areas covers eight archaeological sites dating from 475 to 660 CE — the Gongsanseong fortress and royal tombs at Songsan-ri belonging to the capital at Ungjin, present-day Gongju; the Busosanseong fortress, Gwanbuk-ri administrative buildings, Jeongnimsa temple, Neungsan-ri royal tombs and the Naseong city wall belonging to the later capital at Sabi, now Buyeo; and the royal palace at Wanggung-ri with the Mireuksa temple at Iksan. UNESCO describes these as representing the later Baekje kingdom, at a crossroads of technological, religious and artistic exchange between the kingdoms of Korea, China and Japan.

Two capitals in a single kingdom's later phase is a useful corrective to the idea that a capital is a fixed property of a state.

Why the end dates disagree

UNESCO gives the Baekje kingdom as 18 BCE to 660 CE. Columbia gives 18 BCE to 663 CE. That three-year gap is not sloppiness.

660 is the year the Baekje capital fell. 663 is the defeat of the movement that attempted to restore the kingdom afterwards, with outside support. Whether a state ends when its capital is taken or when organised resistance in its name collapses is a judgement, not a fact, and different sources make it differently. This is exactly the reasoning how historians date events sets out: a date in a textbook is usually the end of an argument, not a measurement.

The same structure underlies the whole argument over why Rome fell, where the traditional date marks a deposition that contemporaries did not experience as the end of anything.

Goguryeo: a dispute worth naming

The most contested dating in Korean history concerns Goguryeo, whose territory spanned what is now northern Korea and north-eastern China.

UNESCO's entry for the Capital Cities and Tombs of the Ancient Koguryo Kingdom — a property in China, comprising three cities and forty tombs — describes the dynasty as ruling over parts of northern China and the northern half of the Korean peninsula from 277 BC to AD 668. Korean chronology, including Columbia's timeline, conventionally begins the kingdom in 37 BCE.

That is a difference of more than two centuries, and it sits inside a broader disagreement about whether Goguryeo is best understood as a Korean state, a regional state within Chinese history, or something that does not fit either national frame. North Korea's own Koguryo tomb complex is separately inscribed. The responsible position for a reader is not to pick a side but to know that the claim exists, that state institutions on each side maintain positions, and that scholars outside both have argued the framing itself is anachronistic — national categories applied to a period that did not use them.