The paper money that is used in the United States is the Federal Reserve Notes. It should be noted that the Federal Reserve Note is an example of a fist money.
Fiat money refers to a government-issued currency and it should be noted that this isn't backed by a commodity. Through fiat money, the central bank can control the economy. Majority of modern paper currencies, are fiat money. e.g dollar, pounds etc.
War erupted in Yugoslavia because the country was a <span>multinational state. T</span>he answer to your question is D.I hope that this is the answer that you were looking for and it has helped you.
