Archaeological exploration shows evidence of human settlement since about 4000 bce along the Han River in the area now occupied by Seoul. The earliest historical mention of Seoul and the surrounding area dates from the 1st century bce. During the Three Kingdoms period (c. 57 bce–668 ce) of Silla, Goguryeo, and Baekje, the area formed a borderland between the three countries, although during the early part of the period it was most closely associated with the kingdom of Baekje. Historical accounts as well as archaeological records indicate that the original site of Baekje’s capital, Wiryeseong, was in the northeastern part ...(100 of 3325 words)