Asia Pacific 1929: Sino-Soviet Conflict
Encouraged by the Chinese Nationalist government, the Fengtian clique seized the part Soviet-administered Chinese Eastern Railway in 1929. The Soviets responded with a two-pronged invasion, swiftly forcing the Chinese to come to terms.
Treaty ports were towns opened to foreign trade by unequal treaties in China. Foreigners operating within treaty ports enjoyed extraterritoriality, being subject to their home country's laws. Unlike concessions such as Hong Kong, these territories were not directly leased by the foreign powers and did not have sizable foreign garrisons.
Treaty ports are not shown in the maps after the 1911 Chinese Revolution in order to give a clearer picture of the chaos in China itself and as by that point their numbers had stabilized. After the revolution, some of the smaller ports were phased out while the others became less important as the situation in China meant that only the concessions could provide foreigners with security. Most, however, still continued on into the 1940s when the Japanese entry into World War II and foreign agreements with China brought them to an end.
See this map for treaty ports in 1907, when the system was at its peak.
By the terms of the Treaty of Tientsin (1858), foreign vessels including warships had the right to free navigation on the Yangtze River. In practical terms, this right extended only as far as Yichang until 1900, when advances in steam navigation allowed access as far inland as Chongqing.
26 Mar–6 Jun 1929 Chiang Kaishek defeats Guangxi clique▲
Chiang Kaishek defeats Guangxi clique
10 Jul 1929 Fengtian clique seizes Chinese Eastern Railway▲
Fengtian clique seizes Chinese Eastern Railway
22 Jul–20 Nov 1929 Soviet Union invades Manchuria▲
Soviet Union invades Manchuria
10 Oct 1929 Guominjun denounces Chiang Kaishek▲
Guominjun denounces Chiang Kaishek
24–29 Oct 1929 Wall Street Crash▲
Between opening on 24 October 1929 (“Black Thursday”) and close on 29 October (“Black Tuesday”), the Dow Jones Industrial Average dropped in value from 305.85 to 230.07 in the most devastating stock market crash in United States history. The crash would bring an abrupt end to the Roaring Twenties and signal the beginning of the Great Depression.