Why does soccer add time at the end?

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Tags

1. #prevent
2. #between
3. #round
4. #these
5. #usually
6. #during
7. #announced
8. #shortly
9. #minutes
10. #number
11. #protecting
12. #soccer
13. #minute
14. #second
15. #clock
16. #first
17. #added
18. #halves
19. #stoppages
20. #stoppage
21. #before
22. #account
23. #running