How do currencies become stronger?

Related questions

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5. Why is USD so strong?
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7. Which country money value is high?
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Tags

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2. #strong
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4. #trade
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6. #probably
7. #competitiveness
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11. #country
12. #inflation
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16. #hurting
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18. #currencies
19. #exports
20. #imports
21. #boosting
22. #expensive