Why do countries peg their currency to the dollar?

Related questions

1. Why did Argentina peg its currency to the dollar?
2. What do Chinese coins mean?
3. What is offshore trading?
4. What is next year's Chinese animal 2018?
5. What are lucky coins?
6. What does ear cancer look like?
7. What were ancient Chinese coins used for?
8. Why do Japanese coins have holes in them?
9. How much does a meal cost in China?
10. How much does a Big Mac cost in Hong Kong?

Tags

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