Estonian kroon circulation. Coins in circulation before being replaced by the euro: Estonian kroon The kroon (sign: kr; code: EEK) was the official currency of Estonia for two periods in history: 1928–1940 and 1992–2011. Between 1 January and 14 January 2011, the kroon circulated together with the euro, after which the euro became the sole legal tender in Estonia. The kroon was subdivided into 100 cents ("senti"; singular "sent"). The word "kroon" (, “crown”) is related to that of the Nordic currencies (such as the Swedish krona and the Danish and Norwegian krone) and derived from the Latin word "corona" ("crown"). The
A Monetary History of the United States A Monetary History of the United States A Monetary History of the United States, 1867–1960 is a book written in 1963 by Nobel Prize–winning economist Milton Friedman and Anna J. Schwartz. It uses historical time series and economic analysis to argue the then-novel proposition that changes in the money supply profoundly influenced the U.S. economy, especially the behavior of economic fluctuations. The implication they draw is that changes in the money supply had unintended adverse effects, and that sound monetary policy is necessary for economic stability. Economic historians see it as one of the most influential economics books of the