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A Study on Silla's Advancement into the Northeastern Area and on the Region from which Isabu Sailed to Conquer Usanguk

  • The Review of Korean History
  • 2011, (101), pp.45-80
  • Publisher : The Historical Society Of Korea
  • Research Area : Humanities > History

Kim Chang Kyum 1

1한국학중앙연구원

Accredited

ABSTRACT

This study is about Silla's advancement into the Northeastern area for territorial expansion and the harbour from which Isabu sailed to conquer Usanguk(Mondern day Ulleungdo). Silla carried out its advancement into the Northeastern area by obtaining a strategic foothold in the East Sea coastal route and movement(of troops)through an overland route. In this process, Silla secured a port toward the East Sea by establishing Siljikju in Samcheok and by appointing Isabu as Governor(Gunju), by which, Silla formed a substructure to conquer Usanguk. Isabu was appointed as Siljik-Gunju in 505. Before that, he had conquered some villages in Geumgwan Gaya and let the Gaya people migrate to this area. Subsequently Isabu built a naval base in Siljik by using Gaya's advanced marine technologies to this place. In 512, he became a Haseulla Governor(Gunju)and finally conquered Usanguk. I have identified that Samcheok is an outport for the conquest of Usanguk for the following reasons. First, The well-disciplined naval forces under the command of Isabu joined the war. Secondly, Siljikjeong-military forces could be mobilized because they were free from the military pressure of Goguryeo. Third, in the view of geographical conditions, Samcheok is the most accessible place to reach Ulleungdo by using the monsoon wind from the Southeast during that season. Fourthly, Isabu's apotheosis, as is evident in his invocation in the extant Shaman Rite for Good Fishing in Samcheok until today, may be cited as one of the reasons.

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