Why did the Berlin Wall collapse?

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Tags

1. #europe
2. #across
3. #starting
4. #borders
5. #relations
6. #country
7. #party
8. #communist
9. #citizens
10. #november
11. #berlin
12. #spokesman
13. #announced
14. #began
15. #eastern
16. #change
17. #cross
18. #midnight