Do I need to buy all WoW expansions?

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Tags

1. #upcoming
2. #requires
3. #access
4. #active
5. #longer
6. #purchase
7. #azeroth
8. #world
9. #first
10. #dropped
11. #monthly
12. #expansions
13. #expansion
14. #unlocked
15. #until
16. #paying
17. #battle
18. #warcraft
19. #subscription
20. #buying
21. #patch