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As noted earlier, a change in the exchange rate can, in the short run, affect the demand for and supply of commodities, and the competitiveness of US agriculture. When the US dollar strengthens or gains in value, it causes importers to pay more for the US dollar to buy US commodities.
The policies a countryâs government implements can have a significant effect on a currencyâs exchange rate. As policies promote or suppress certain parts of a countryâs economy, those changes can affect how desirable its currency is, in turn affecting the currencyâs exchange rate.