Why is Amsterdam full of canals?

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Tags

1. #riches
2. #houses
3. #overseas
4. #along
5. #merchants
6. #expansion
7. #golden
8. #built
9. #amsterdam
10. #people
11. #while
12. #possible
13. #funded
14. #called
15. #canals
16. #canal
17. #district
18. #wealthy
19. #flooding
20. #themselves
21. #massive
22. #jordaan
23. #during