The "Post-War Period" refers to the time following major conflicts, particularly after World War II, which ended in 1945. This era was marked by significant political, social, and economic changes as countries worked to rebuild and recover from the devastation of war. Many nations focused on establishing peace, rebuilding infrastructure, and addressing the needs of displaced populations. During this time, international organizations like the United Nations were created to promote cooperation and prevent future conflicts. The Marshall Plan was implemented to aid European recovery, while the Cold War began, leading to tensions between the United States and the Soviet Union.