After the economic recession, there will be a shortage of goods due to insufficient production, a decrease in exports and a greater dependence on imports. There is a trade deficit. As far as the whole country is concerned, the demand for money in this country is weak in the foreign exchange market.

Generally speaking, if the economy is poor, we can't make goods, so we must rely on imports. If you import more than you export, you have to spend more money on it. Buy foreign exchange with your own money. When supply exceeds demand in the international market, money is worthless.