Was southern Ireland ever part of the UK?

Related questions

1. Is Drogheda the biggest town in Ireland?
2. Is Ireland still under British rule?
3. Is English spoken in Ireland?
4. Is Dublin part of UK?
5. Is it expensive to live in Ireland?
6. Is Louth the smallest county in Ireland?
7. What is the fastest growing town in Ireland?
8. What is the biggest town in Dublin?
9. What is the population of Dublin Ireland 2017?
10. What's Dublin famous for?

Tags

1. #northern
2. #political
3. #england
4. #britain
5. #became
6. #united
7. #ireland
8. #scotland
9. #counties
10. #kingdom
11. #between
12. #again
13. #changed
14. #straight
15. #wales
16. #great
17. #refers
18. #record
19. #union
20. #state