Why are borders and boundaries important?

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Tags

1. #theory
2. #where
3. #within
4. #control
5. #others
6. #sovereign
7. #countries
8. #sovereignty
9. #country
10. #boundaries
11. #borders
12. #exercise
13. #cannot
14. #enforce
15. #there
16. #effect
17. #states
18. #because
19. #enter
20. #exist
21. #their
22. #those