A is 100% the correct answer
The great and all powerful Soviet Union, and then after 1949 the communist german party took controlled which was maintained by the United Soviet Socialist Republic (USSR). Also I should mention that the Allies wanted to split the city of Berlin up since it was fair.. So Berlin was split in 4 parts and thats why you hear the name "Berlin Wall" which was the Soviet Wall surrounding their side of the city..
This image is from the battle of Berlin won by the Soviet Union in 1945
<span>A Confederation. Despite the actual grouping of states into one "unit", the idea of a confederacy is to let the states essentially rule for themselves.Sovereign simply means self-ruling which is what each state would follow under union beliefs.There is no established law of the land for any unions as it would defeat the purpose.</span>