China claims nearly the entire South China Sea based on its nine-dash line map from 1947. The South China Sea is an important strategic and economic waterway that contains valuable oil, gas, fisheries, and shipping lanes. China seeks to balance American influence in the region and assert sovereignty over disputed islands and territories in order to gain control of the South China Sea's resources and establish regional hegemony. However, China's territorial claims have been rejected by an international tribunal and are contested by several neighboring countries.