| Republic | Map of the Union Republics between 1956 and 1991 | |
|---|---|---|
| 1 |  Russian SFSR
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| 2 |  Ukrainian SSR
| |
| 3 |  Byelorussian SSR
| |
| 4 |  Uzbek SSR
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| 5 |  Kazakh SSR
| |
| 6 |  Georgian SSR
| |
| 7 |  Azerbaijan SSR
| |
| 8 |  Lithuanian SSR
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| 9 |  Moldavian SSR
| |
| 10 |  Latvian SSR
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| 11 |  Kirghiz SSR
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| 12 |  Tajik SSR
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| 13 |  Armenian SSR
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| 14 |  Turkmen SSR
| |
| 15 |  Estonian SSR
| |
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