Manchuria (Chinese: 滿洲; Pinyin: Mǎnzhōu; Manchu: Manchukuo) is a country in northeast China. It is bordered by the Soviet Union to the north and east, Mongolia to the east, and Korea and the People's Republic of China to the south.
In 1931, Japan seized the Manchuria region following the Mukden Incident and installed a pro-Japanese government one year later, with Puyi, the last Qing emperor, as the nominal regent and emperor. Manchukuo was occupied mostly by the Soviet Union during World War II, although the Liaoning area was seized by the Union of American People's Republics.
Manchus form a very small minority in Manchuria, whose overwhelmingly largest ethnic group are Han Chinese. The Mongol regions of western Manchuria are ruled under a slightly different system in acknowledgement of the Mongolian traditions there.
Neither the People's Republic of China nor the Republic of China officially recognizes the independence of Manchuria, but the ROC continues to work with Manchuria under a "live-and-let-live" policy. Manchuria claims the PRC's Liaoning province, while the PRC claims the entirety of Manchuria.
Manchuria maintains strong relations with the Soviet Union, which leads the Commonwealth of Independent States, of which Manchuria is a member. It is a member of the League of Nations and Non-Aligned Movement.