The last time their currency tanked they had to make the us dollar their legal tender to save the economy,those evil Americans and their dollars.
In 1993, during the period of economic austerity known as the Special Period, the US dollar was made legal tender to encourage hard currency to enter the economy. The dollar became the currency used to purchase some non-essential goods and services, such as cosmetics, and even non-staple kinds of food and drink. In 1994, the convertible peso was introduced at a par with the dollar. On 8 November 2004, the Cuban government withdrew the U.S. dollar from circulation, citing the need to retaliate against further U.S. sanctions.