The document describes a decline in demand for the currency of Zeeonia, known as the zee, which causes the zee to depreciate relative to the US dollar under the current fixed exchange rate of $5 = Z1. To maintain the fixed exchange rate, policymakers would intervene in the zee market. Under a flexible exchange rate, the US trade surplus caused by falling zee demand would resolve as Americans import less from Zeeonia while Zeeonia buys more from the US, causing the zee to depreciate and dollar to appreciate until the surplus is eliminated.