A prime concern for the Soviet Union after the war was

1) free elections in all European countries

2) the reconstruction of the German economy

3) establishment of friendly nations on its borders

4) the acquisition of Japanese territories

After world war the main concern of soviet union is the economy

Explanation:

After world war the main concern of soviet union is the economy and security across the boarder. There was lot of damages during the war hence both powerful state people i. e. USA and USSR people become hostile at their places. and their main focus is to provide basic needs to their people and which can be done by regaining the economy.

therefore correct answer is option 2 i. e regain the German economy.