noun, noun or participle which takes 'suru'
national isolation; closing the country
General term for a country shutting itself off from foreign contact. Can be used as a noun or with する to describe the act of closing a country.
See also: 開国
江戸時代、日本は鎖国をしていた。
During the Edo period, Japan practiced national isolation.
その
That country has kept itself closed off for many years.
noun
sakoku; Tokugawa isolation policy
Specifically refers to the historical policy of the Tokugawa shogunate that severely restricted foreign contact from the early 17th to mid-19th century. Often used in historical contexts.
鎖国は1639年から1854年まで続いた。
The sakoku policy lasted from 1639 to 1854.