been a great increase in the archaeological excavations of ancient industrial production sites, roads, palace grounds and elite precincts, ceremonial sites, commoner households, and fortresses due to the boom in salvage archaeology in South Korea. Rhee and Choi hypothesize that a mix of internal developments and external factors lead to the emergence of state-level societies in Korea. A number of archaeologists including Kang demonstrate the role of frequent warfare in the development of peninsular states. Foundation (c. 0 – 300/400 AD) Some individual correlates of complex societies are found in the chiefdoms of Korea that date back to c. 700 BC (e.g. see Igeum-dong, Songguk-ri). However, the best evidence from the archaeological record in Korea indicates that states formed between 300 BC and 300/400 AD. However, archaeologists are not prepared to suggest that this means there were states in the BC era. The correlates of state-level societies did not develop as a package, but rather in spurts and starts and at various points in time. It was some time between 100 and 400 AD that individual correlates of state societies had developed to a sufficient number and scale that state-level societies can be confidently identified using archaeological data. Burials Lee Sung-Joo analyzed variability in many of the elite cemeteries of the territories of Silla and Gaya polities and found that as late as the 2nd century there was intra-cemetery variation in the distribution of prestige grave goods, but there was an absence of hierarchical differences on a regional scale between cemeteries. Near the end of the 2nd century AD, interior space in elite burials increased in size, and wooden chamber burial construction techniques were increasingly used by elites. In the 3rd century, a pattern developed in which single elite cemeteries that were the highest in status compared to all the other cemeteries were built. Such cemeteries were established at high elevations along ridgelines and on hilltops. Furthermore, the uppermost elite were buried in large-scale tombs established at the highest point of a given cemetery. Cemeteries with 'uppermost elite' mounded burials such as Okseong-ri, Yangdong-ri, Daeseong-dong, and Bokcheon-dong display this pattern. Factory-scale production of pottery and roof-tiles Lee Sung-Joo proposed that, in addition to the development of regional political hierarchies as seen through analysis of burials, variation in types of pottery production gradually disappeared and full-time specialization was the only recognizable kind of pottery production from the end of the 4th