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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.
How exchange rate fluctuations affect companies. Most investors will be familiar with the concept of currency exposure, with constantly changing exchange rates affecting the cost of investing in international stocks. These same issues also affect companies that operate internationally.