Seoul area, the capital of Korea, is included in Mahan(馬韓)'s area. According to record, Seoul area was originally the area of the Baekje, and the Baekje was once included in Mahan(馬韓), so there is no doubt about it. The name of the biggest river in Seoul is Han River(漢江). The definition of Samhan(三韓) is very convenient for Chinese, and the pronunciation of Han(韓) and Han(漢) is exactly same. China's ‘abuse of record writting power’ is a point that must be taken care of in order to properly interpret East Asian history. According to Korean nationalists, Koreans are descendants of the Dongyi of the concept of being abused. The name "Three Kingdoms" was used in the titles of the Korean histories Samguk sagi (12th century) and Samguk yusa (13th century), and should not be confused with the Three Kingdoms of China. Foundation of Three Kingdoms The Three Kingdoms were founded after the fall of Wiman Joseon, and gradually conquered and absorbed various other small states and confederacies. After the fall of Gojoseon, the Han dynasty established four commanderies in the northwestern Korean Peninsula and present Liaoning. Three fell quickly to the Samhan, and the last was destroyed by Goguryeo in 313. The nascent precursors of Baekje and Silla expanded within the web of statelets during the Proto Three Kingdoms Period, and Goguryeo conquered neighboring state like Buyeo in Manchuria and chiefdoms in Okjeo, Dongye which occupied the northeastern Korean peninsula. The three polities made the transition from walled-town state to full-fledged state-level societies between 1st – 3rd century AD. All three kingdoms shared a similar culture and language. Their original religions appear to have been shamanistic, but they were increasingly influenced by Chinese culture, particularly Confucianism and Taoism. In the 4th century, Buddhism was introduced to the peninsula and spread rapidly, briefly becoming the official religion of all three kingdoms. According to Lisa kay Bailey, the material culture of the Three Kingdoms can be clearly distinguished as they displayed cultural influence from different regions. Goguryeo's culture showed stronger influence from northern Chinese art, Baekche showed stronger influence from southern Chinese art, and Silla, which was more distant from China, showed greater influence from Eurasian steppe nomad cultures and greater preservation of native traditions. During this period, the Three Kingdoms had yet to unify their separate identities. Each kingdom produced their own individual histories; only in the Goryeo dynasty period was the