United through Division: An Innovative Approach to European Monetary Policy : A Study of the Optimal Currency Areas in the European Union through Cluster Analysis Conducted on Samples Between 2007–2019

Sammanfattning: The study deals with the theory of optimal currency areas complemented with the EU's Maastricht criteria in order to investigate how today’s Economic and Monetary Union of the European Union can be divided into smaller unions with countries that are more homogeneous based on said criteria compared to the current larger currency union. To investigate this, we use cluster analysis as the method easily enables analysis of similarities and differences between countries. The results show that the optimal number of clusters for the nations in the EU in 2007, 2008, 2010 and 2015 is ten and that the optimal number of clusters in 2019 is seven. We also observe a relatively distinct division between western and eastern countries, which splits the countries in two clusters. These two clusters are consistent over the studied years, however not considered the most optimal according to cluster analysis. Nonetheless, with respect to political, geographical, and cultural aspects, we conclude that having two different currencies within the European Union being the most realistic.