had become the world's fifth largest city and home to 70,000 foreigners. In the 1930s, some 30,000 Jewish refugees from Europe arrived in the city.
The Sino-Japanese War concluded with the Treaty of Shimonoseki, which elevated Japan to become another foreign power in Shanghai. Japan built the first factories in Shanghai, which were soon copied by other foreign powers. Shanghai was then the most important financial center in the Far East. All this international activity gave Shanghai the nickname "the Great Athens of China"
Under the Republic of China (1911–1949), Shanghai's political status was finally raised to that of a municipality on 14 July 1927. Although the territory of the foreign concessions was excluded from their control, this new Chinese municipality still covered an area of 828.8 square kilometers, including the modern-day districts of Baoshan, Yangpu, Zhabei, Nanshi, and Pudong. Headed by a Chinese mayor and municipal council, the new city governments first task was to create a new city-center in Jiangwan town of Yangpu district, outside the boundaries of the foreign concessions. This new city-center was planned to include a public museum, library, sports stadium, and city hall.
On 28 January 1932, Japanese forces struck and the Chinese resisted, fighting to a standstill; a ceasefire was brokered in May. The Battle of Shanghai in 1937 resulted in the occupation of the Chinese administered parts of Shanghai outside of the International Settlement and the French Concession. The International Settlement was occupied by the Japanese on 8 December 1941 and remained occupied until Japan's surrender in 1945, during which time war crimes were committed.
On 27 May 1949, the People's Liberation Army took control of Shanghai, which was one of only three former Republic of China (ROC) municipalities not merged into neighboring provinces over the next decade (the others being Beijing and Tianjin). Shanghai underwent a series of
