Emperors controlled Japan until the 12th century A.D., when military rulers, called shoguns, took control and ruled by might.
Ndi Eze chịrị Japan ruo na narị afọ nke iri na abụọ AD, mgbe ndị isi agha, a na-akpọ shoguns, na-achịkwa ma na-achịkwa site n'ike.