Why currencies are pegged to dollars?

Related questions

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6. How much does it cost to ship a car from Dubai to USA?
7. What countries are pegged to the US dollar?
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Tags

1. #along
2. #their
3. #dollar
4. #maintains
5. #exchange
6. #country
7. #rises
8. #fixed
9. #value
10. #currency
11. #controls
12. #central
13. #countries
14. #falls