Creation of the Soviet Union
First All-Union Congress approves the declaration and treaty creating the USSR
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Original prompt & settings (JSON) ↗The USSR began with four signatures, not seven: Armenia, Azerbaijan and Georgia were bundled into a single Transcaucasian federation.
30 December 1922: four delegations in Moscow
Delegations of the Russian SFSR, the Ukrainian SSR, the Byelorussian SSR and the Transcaucasian SFSR met at the First Congress of Soviets of the USSR in Moscow on 30 December 1922. Joseph Stalin reported on the preceding conference's agreement, and the Congress approved the Declaration and Treaty on the Formation of the USSR.
The treaty declared that the four republics were joining in a single state called the Union of Soviet Socialist Republics, and specified union-level institutions and powers.
Lenin's design, Stalin's speech
Lenin had opposed Stalin's proposal to absorb the other republics into the Russian SFSR and pressed instead for a formally federal union. He did not attend: illness kept him away, so Stalin delivered the report on a constitutional design that had defeated his own.
The Congress elected the USSR's first Central Executive Committee, creating an all-union authority to operate between congresses.
What the four republics handed over
The republics formally transferred specified authority over foreign affairs, defence, trade, transport and other matters to union institutions — while the treaty simultaneously promised each of them the right to leave.
The 1922 treaty was a constitutional foundation rather than a finished constitution; the USSR's first Constitution followed in 1924.
Sources
Researched 23 Aug 2026 5 sources 3 audit passes
How this was checked
Researched from the web into a fact sheet, rewritten from that sheet, then audited against it by a different model. How the pipeline works →
What the sources leave uncertain
- The December 30 date and congressional approval are firmly documented.
- Translations and later constitutions use varying English forms—Russian/Russian Socialist Federative Soviet Republic, Byelorussian/Belarusian SSR, and Transcaucasian Socialist Federative Soviet Republic—but these refer to the same four founding signatories.
- The 1922 treaty was a constitutional foundation, but the first USSR Constitution followed in 1924; accounts should not collapse those two stages.