Why did the Cold War end, and what changed when the Soviet Union collapsed?
Explain why the Cold War ended: Gorbachev's reforms, the fall of the Berlin Wall, the collapse of the Soviet Union, and the emergence of a new world order (Framework Key Ideas 10.9 and 10.10).
A Framework-level answer on the end of the Cold War for the NY Global History and Geography II Regents: Gorbachev's reforms (glasnost and perestroika), the fall of the Berlin Wall, the collapse of the Soviet Union, and the new world order, with worked exam questions.
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What this topic is asking
Framework Key Ideas 10.9 and 10.10 ask you to explain why the Cold War ended: Gorbachev's reforms, the fall of the Berlin Wall (1989), the collapse of the Soviet Union (1991), and the new world order that followed. This is a classic turning-point topic, and the fall of the Berlin Wall is one of the most recognizable symbols on the exam.
Why the Cold War ended
1989: the fall of the Berlin Wall
In 1989, a wave of mostly peaceful revolutions swept communist governments from power across Eastern Europe (Poland, Hungary, Czechoslovakia, and others). The most dramatic moment was the opening and tearing down of the Berlin Wall in November 1989, which had divided the city for almost three decades. The following year, Germany was reunified as a single democratic state. These events showed that Soviet control over Eastern Europe had ended.
1991: the collapse of the Soviet Union
In 1991, the Soviet Union itself collapsed. Its republics declared independence, and the USSR dissolved into Russia and many other independent nations. Communism as a governing system had failed in its heartland. The United States was left as the world's only superpower.
The new world order
The end of the Cold War reshaped the world. The bipolar struggle between two superpowers gave way to American predominance and a surge of globalization, as former communist countries opened to world trade and democracy spread. But new challenges emerged: ethnic conflicts (as in the former Yugoslavia), regional instability, and later the rise of new powers and global terrorism. The end of the Cold War is therefore both a conclusion to the twentieth-century story and a gateway to the contemporary global issues of Module 6.
Try this
Q1. Name the Soviet leader whose reforms of glasnost and perestroika helped end the Cold War. [Recall]
- Cue. Mikhail Gorbachev.
Q2. Explain why the fall of the Berlin Wall is such an important symbol. [Short explanation]
- Cue. The Wall had divided communist East Berlin from democratic West Berlin for decades; its fall in 1989 symbolized the collapse of communism in Eastern Europe and the end of the Cold War.
Exam-style practice questions
Practice questions written in the style of NYSED exam questions on this dot point, with worked answer explainers. The year tag is the paper they imitate, not the source.
Regents GHG II (stimulus, 2023)1 marksThe fall of the Berlin Wall in 1989 is best understood as a symbol of the (1) start of World War II; (2) end of the Cold War and the collapse of communism in Eastern Europe; (3) beginning of the Industrial Revolution; (4) creation of the Soviet Union.Show worked answer →
A stimulus-based multiple-choice item assessing turning points (Practice B).
The correct answer is (2). The fall of the Berlin Wall in 1989 symbolized the collapse of communist control in Eastern Europe and the approaching end of the Cold War.
Why the others are wrong: (1) World War II began in 1939; (3) the Industrial Revolution began in the 1700s; (4) the Soviet Union was created in 1922, not ended by the Wall.
Markers reward identifying the fall of the Wall as a symbol of the end of the Cold War.
Regents GHG II (CRQ turning point, 2024)2 marksDocument 1 describes Soviet leader Mikhail Gorbachev's reforms of openness (glasnost) and economic restructuring (perestroika). Based on this document and your knowledge of social studies, explain how Gorbachev's reforms contributed to the end of the Cold War.Show worked answer →
A 2-point Cause-and-Effect / Turning Point CRQ (Practice B).
A complete answer explains the link: Gorbachev's policies of glasnost (openness, allowing more free speech and criticism) and perestroika (economic restructuring) were meant to save the Soviet system, but they loosened the tight controls that held it together. This allowed long-suppressed demands for freedom and independence to surface, so communist governments in Eastern Europe fell (1989) and the Soviet Union itself broke apart (1991), ending the Cold War.
Markers reward connecting the loosening of controls to the collapse of communism and the end of the Cold War.
Related dot points
- Explain the origins of the Cold War: how ideological and political differences between the United States and the Soviet Union after World War II created a global rivalry, including containment, the division of Europe, and the arms race (Framework Key Idea 10.9).
A Framework-level answer on the origins of the Cold War for the NY Global History and Geography II Regents: the ideological clash between capitalism and communism, the division of Europe and the Iron Curtain, containment and the Truman Doctrine, NATO and the Warsaw Pact, and the arms race, with worked exam questions.
- Explain how the Cold War was fought through proxy wars and crises: the Korean War, the Cuban Missile Crisis, the Vietnam War, and the space and arms races (Framework Key Idea 10.9).
A Framework-level answer on Cold War conflicts for the NY Global History and Geography II Regents: how the superpowers competed through proxy wars (Korea, Vietnam), the Cuban Missile Crisis and the threat of nuclear war, and the arms and space races, with worked exam questions.
- Explain globalization and economic interdependence: how trade, multinational corporations, and international organizations have created an interconnected world economy with both benefits and costs (Framework Key Idea 10.10).
A Framework-level answer on globalization for the NY Global History and Geography II Regents: what globalization is, the role of trade, multinational corporations, and international organizations, and the benefits and costs of an interconnected world economy, with worked exam questions.
- Explain contemporary global challenges: environmental change and human impact, terrorism and conflict, population pressures and migration, and the role of international cooperation (Framework Key Idea 10.10).
A Framework-level answer on contemporary global challenges for the NY Global History and Geography II Regents: environmental change and human impact, terrorism and conflict, population growth and migration, and international cooperation, with worked exam questions.
- Apply chronological reasoning and causation (Social Studies Practice B): distinguish long-term and immediate causes from effects, identify and explain turning points, and analyze continuity and change over time.
An exam-skills answer for the NY Global History and Geography II Regents: how to reason about cause and effect (long-term versus immediate causes), how to identify and explain a turning point, and how to analyze continuity and change over time, with worked exam questions.
Sources & how we know this
- New York State K-12 Social Studies Framework (Grades 9 to 12) — New York State Education Department (2016)
- Global History and Geography II Framework — New York State Education Department (2025)