Sosa
Sosa is an administrative district in Bucheon County, Gyeonggi Province. Currently, it corresponds to Bucheon City in Gyeonggi Province and Guro District in Seoul City. It was originally Bupyeong-gun Suan-myeon, Oksan-myeon, and Sukcheon-myeon. In 1931, it was renamed as the Sosamyeon, and in 1941 it was promoted to Sosa. In 1963, seven rivers of Sosa, Gogok-ri, Songbong-ri, Yulryei, Mugi, Onsuri, Cheonwang-ri and Juri-ri were added to Yeongdeungpo-gu, Seoul. After the abolition of Bucheon County in 1973, Sosa Town was promoted to Bucheon City.