Answer:
The Cold War started after the end of World War Two. Beginning in 1945 and until the 1990s, the United States and the Union of Soviet Socialist Republics (USSR) entered a global competition for international influence over military, economic, and political issues all over the world.
Step-by-step explanation:
The global balance of power was restructured around these two competing superpowers fighting to have the best nuclear weapons, as well as the most allegiances and military and economic support from other nations.