Why is pizza so popular in Italy?

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Tags

1. #pizza
2. #there
3. #after
4. #other
5. #foods
6. #changed
7. #naples
8. #eaten
9. #world
10. #allied
11. #enjoy
12. #stationed
13. #developed
14. #tomato
15. #mainly
16. #italian
17. #emigrants
18. #focaccia
19. #italy
20. #modern
21. #troops
22. #added
23. #century
24. #along