1884 map of Shanghai showing foreign concessions. From north to south: the American Concession (orange), the British Concession (blue), the French Concession (faded red), the Chinese part of the city (yellow).Boundary Stone of the American Settlement in Shanghai.
History
In 1845, the bishop of the American Episcopal Church W. J. Boone bought an area in Hongkew to create real estates in Shanghai, in the name of building a church. Later Boone proposed to create an American settlement and in 1848, the Shanghai County approved the proposal. On 25 June 1863 American consul George Seward signed an agreement with the head of Shanghai County Huang Fang (黃芳) to create the American Concession in Shanghai, which also confirmed the boundary of area.[1] On 21 September 1863, the American area was merged with the British as the Shanghai International Settlement.