National Archives of the United Kingdom

Definition and stakes

Various Encyclopaedia Britannica, 11th Edition…

In contradistinction those public documents which were issued in closed form under seal were known as “close letters,” litterae clausae.
Such public documents belong to the state archives of their several countries, and are the monuments of administrative and political and domestic history of a nation from one generation to another. In no country has so perfect a series been preserved as in our own. Into the Public Record Office in London have been brought together all the collections of state archives which were formerly stored in different official repositories of the kingdom.
Source: Gutenberg

Archives Law of the People's Republic of China (2020)

State organs, groups, enterprises, public institutions, other organizations, and citizens may, according to the need for economic development, building of national defense, education, scientific research, and other work, access to restricted archives of archival repositories and archives in the custody of organs, groups, enterprises, public institutions, and other organizations pursuant to relevant regulations of the state.
Source: Wikisource

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