Empire of Japan (Japan's official name under the Meiji Constitution)
galactic empire (in science fiction)
the Third Reich; Nazi Germany
imperial soldier; soldier in an imperial army
Imperial Diet; legislative assembly of Japan (1889-1947); Imperial Diet; legislative assembly of the Holy Roman Empire
(former) imperial university
Meiji Constitution (Constitution of the Empire of Japan)
Mughal Empire; Mogul Empire
Mughal Empire; Mogul Empire
Latin Empire (Constantinople, 1204-1261)
Great Qing Empire (China, 1644-1912); Qing dynasty