Why did Ireland split from UK?

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Tags

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2. #unrest
3. #decades
4. #violence
5. #northern
6. #split
7. #there
8. #south
9. #break
10. #ireland
11. #which
12. #remained
13. #rulers
14. #living
15. #years
16. #their
17. #against
18. #became
19. #called
20. #after
21. #republic
22. #state
23. #separate
24. #people
25. #ninety