Manchukuo
Manchukuo (満洲国, Manshuukoku) is a puppet state of the Empire of Japan.
Manchuria (满洲) is a description of the same region by ethnic terms, especially of the Manchu (满洲, Manzhou).
History
The designation of a distinct Manchurian region largely comes from Japanese imperialism. The region was referred to as Manshuu (満州).
The Qing dynasty was a period of Manchu power.