The dissolution of the Soviet Uniona occurred on 26 December 1991.
Hope this helps :D
True. it was by Harriet Beecher Stowe
A and D are most possible answers. But I think A is the best solution
The theory that the threat of nuclear war is enough to prevent an attack is called: Nuclear deterrent
The theory is based on the likelihood that every nations would fear a mutual destruction when initiating attack to countries that own nuclear weapon. Even if a country emerge victorious from a nuclear war, the damage that caused by opposition's nuclear would damage the environment of the victors for decades.
I believe from all of war and lack of resources