鎖国
Common
Noun
Irregular
1
noun (common) (futsuumeishi)noun or participle which takes the aux. verb suru
national isolation;closing the country (to foreigners)
See also:
開国 (かいこく)
まぁ、日本も鎖国していたわけだしなあ。
Well, after all Japan also cut itself off from the world.
2
noun (common) (futsuumeishi)
historical term
sakoku;policy of national isolation enacted by the Tokugawa shogunate