The Cold War began in **1947**, following the end of World War II. This period was characterized by political, military, and ideological rivalry primarily between the United States and its allies, and the Soviet Union and its satellite states. The tensions escalated as both superpowers engaged in a global struggle for influence, leading to various proxy wars, the arms race, and the space race. The Cold War officially came to an end with the dissolution of the Soviet Union in 1991, marking a significant shift in international relations and political dynamics.