The exploration of previous significant questions continues in the tenth international edition of the book "Economics of Monetary Union." Part I of this market-leading textbook focuses on the costs and benefits arising from the use of a common currency, the consequences of the circulation of the euro in the Eurozone, and the advantages of creating monetary unions in other regions of the planet. Part II focuses on the study of practical problems arising from the operation of a monetary union, examining experiences from the Eurozone and the "open" issues of the European Central Bank (ECB) administrations. The strongly structured analytical framework and the comprehensive approach of Paul De Grauwe ensure a deep understanding of this complex and fascinating field of knowledge.