From 1961 to 1989, the Berlin Wall was a fortified concrete border that practically and emotionally divided Berlin.
The Berlin Wall, which separated communist East Germany from West Germany, fell on November 9, 1989, five days after 500,000 people assembled in East Berlin in a huge protest.
East German leaders attempted to defuse increasing protests by relaxing borders, allowing East Germans to travel more freely. They had not intended to entirely open the border.
The alterations were intended to be minimal, but the manner in which they were implemented had far-reaching repercussions.
Thus Option A is correct as it is the happy movement for them.
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