Manchukuo /mænˈt͡ʃʊəkuːəʊ/ noun1 •A puppet state of Imperial Japan, existing from 1932 to 1945, conceived as a Manchu nation-state under the restored Qing dynasty but in reality serving Japanese colonial interests in Manchuria. Capital: Hsinking (Changchun).In 1931, ten years ago, Japan invaded Manchukuo—without warning. — 1941