1924
Two new republics are formed in Central Asia:
- Turkmen Soviet Socialist Republic
- Uzbek Soviet Socialist Republic
The Soviet Union is founded l>y the following republics:
- Russian Soviet Federative Socialist Republic
- Ukrainian Soviet Socialist Republic
- Byelomssian Soviet Socialist Republic
- Transcaucasian Soviet Federative Socialist Repnblic
The Tajik (or Tadzhik) Autonomous Soviet Socialist Republic is split the Uzbek SSR and becomes a constituent republic of the Soviet Union as the Tajik Soviet Socialist Republic.
The Transcaucasian SFSR is dissolved and three new republics have sińce been formed in Transcaucasia:
- Armenian Soviet Socialist Republic
- Azerbaijan Soviet Socialist Republic
- Georgian Soviet Socialist Republic
Two new republics are formed in Central Asia from the Russian SFSR:
- Kazakh Soviet Socialist Republic
- Kyrgyz Soviet Socialist Republic
The Crimean Autonomous Soviet Socialist Republic is transferred from the Russian SFSR to the Ukrainian SSR by Nikita Klmishchev as a gesture to mark the 300th anniversary of the Treaty of Pereyaslav.
Soviet expansion after World War II. Five new republics are formed:
- Estonian Soviet Socialist Republic
- Karelo-Finnish Soviet Socialist Republic
- Latvian Soviet Socialist Republic
- Lithuanian Soviet Socialist Republic
- Moldavian Soviet Socialist Republic
Portions of Poland, Czechoslovakia, and Romania are annexed to the Ukrainian SSR. Portions of noitheastern Poland are ceded to the Byelomssian SSR and the Lithuanian SSR. The noithern poition of Germany s former East Prussian exclave becomes part of the Russian SFSR. The Tuvinian Peoples Republic is annexed to the Soviet Union and becomes the Tuva ASSR under the Russian SFSR. The Kurii islands and the Southern pait of Sakhalin are also added to the Russian SFSR.
The Karelo-Finnish SSR is re-absored into the Russian SFSR as the Karelian ASSR in 1956. For 35 years, the borders of the Soviet republics remained unaltered mitil the dissolution of the Soviet Union in 1991.