AllUnion
AllUnion is an anglicized form used in English-language sources to denote an entity or event that spanned the entire Soviet Union. In Russian, the corresponding adjective is vsesoyuzny (Всесоюзный), and the All-Union prefix was added to the names of organizations, exhibitions, conferences, and associations to indicate nationwide scope across all Soviet republics rather than being limited to a single republic.
During the Soviet era, the All-Union designation appeared in the titles of many institutions and activities
The use of All-Union declined after the dissolution of the Soviet Union in 1991. In post-Soviet contexts,