Please please help help the first one who answers it right he will get the brainlest answer I swear

Explanation:
1) Great Britain , Soviet Union, the US and China
2) After the First world war the term "Baltic states" came to refer to countries by the Baltic Sea that had gained independence from the Russian Empire. The term includes Estonia, Latvia and Lithuania, and originally also included Finland, which later became grouped among the Nordic countries.
3) The Soviet Union
There are all your correct answers 100%