Forming of the territory of the USSR

Throughout all of the short history of the Soviet Union its territories changed a lot. Since 1939 the territory of this country got more then 1,5 millions square kilometers of new lands. So can you guess all of the territories that USSR got since 1939?
The territorial changes in this quiz count periods from 1939 to 1990
Quiz by ChirikRevo
Last updated: December 22, 2019
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First submittedDecember 22, 2019
Times taken11
Average score31.3%
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Date of joining
Events preceding the joining
1-2st November, 1939
German-Soviet invasion of Poland
Nowadays this region has the highest amount of Ukrainian speakers
Western Ukraine
On this territory in 1991 the Belovezha accords, that has put an end to USSR, were adopted
Western Belarus
12th March, 1940
Soviet-Finnish war
Northernmost place in Murmansk oblast, Russia
Rybachiy peninsula
The Soviet invasion of Finland has been ended in this region
The main battlefield of Soviet-Finnish war
South Karelia
Southernmost city of Finland, where some of soviet soldiers were evacuated during German invasion
The smallest acquisition for Soviet Union of Soviet-Finnish war
Islands of Finnish gulf
3th June, 1940
Soviet invasion of Romania
Most of its is covered by the territory of Moldova now
Region in Western Ukraine, where romanian-speaking minority lives
Northern Bukovina
19th September, 1944
Petsamo–Kirkenes offensive
Finland's gateway to the Arctic ocean
14th October, 1944
Tuvan protectorate of USSR
Now it's a republic in Altai region in Russia
2th February, 1946
Soviet-Japanese war
This territories was losed by Russia to Japan in 1905 and then returned
South Sakhalin
A bunch of islands that have lots of volcanoes on them
Kuril islands
4th July, 1946
Königsberg offensive
The capital of Prussia
Königsberg oblast
15th February, 1951
Polish-Soviet territorial exchange
Territories that the USSR took for improve the railway logistic
Chervonohrad territories
15th June, 1990
Soviet-American water territorial exchange
The territories on Russian-American border
Water territories of USA
Level 49
Nov 16, 2020
what about the baltics?