11. The Cold War Begins
By the end of the 1940s, growing mistrust between the United States and the Soviet Union sparked the onset of the Cold War. Rival alliances, nuclear arms races, and stark ideological divides split the world into opposing blocs. Events like the Berlin Blockade and the creation of the Iron Curtain became powerful symbols of this new era of tension. For more on the Cold War’s origins, visit History.com.
