Answer: All of the choices are correct.
Step-by-step explanation:
Hungary opened its borders in 1989 and allowed East Germans to flee to the West through Hungary, creating a significant migration crisis for the East German government.
The lifting of travel restrictions between East and West Germany, which occurred on November 9, 1989, led to the opening of the Berlin Wall and allowed for free movement between the two parts of Germany.
The tearing down of the Berlin Wall symbolized the end of the Cold War and the reunification of Germany. It also marked the collapse of Communism in East Germany.
All of these events contributed to the collapse of Communism in East Germany, leading to the reunification of Germany on October 3, 1990.
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Sources:
- "The Fall of the Berlin Wall: Reassessing the Causes and Consequences of the End of the Cold War" by Angela E. Stent. This book provides a comprehensive analysis of the events that led to the collapse of Communism in East Germany and the reunification of Germany.
- "The Collapse of Communist Power in Europe" by Mary Kaldor. This book provides an overview of the collapse of Communism in Eastern Europe, including East Germany.
- "The Collapse: The Accidental Opening of the Berlin Wall" by Mary Elise Sarotte. This book provides a detailed account of the events leading up to the fall of the Berlin Wall, including the role of Hungary in the collapse of Communism in East Germany.
- "Revolution 1989: The Fall of the Soviet Empire" by Victor Sebestyen. This book provides an overview of the events that led to the collapse of Communism in Eastern Europe, including East Germany.
- "The Unification of Germany" by Michael J. Turner. This book provides an overview of the reunification of Germany and the events that led to the collapse of Communism in East Germany.