Why is dollar used for trading?

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Tags

1. #trading
2. #powerful
3. #strength
4. #around
5. #dollar
6. #bills
7. #economy
8. #countries
9. #range
10. #outside
11. #value
12. #currency
13. #country
14. #billion
15. #another
16. #relative
17. #supports
18. #reason
19. #their
20. #tight