Competitiveness of the Regions of the European Union in a Sustainable Knowledge-Based Economy

The aim of the article is to analyze the level of the knowledge-based economy (KBE) in the European Union countries in terms of sustainable development. The added value of the work is the presentation of research results at different levels of data aggregation (EU countries, EU macro-regions, EU regions). This type of approach was used for the first time in this study. The research assumes that knowledge and skills are one of the basic factors in implementing the concept of sustainable development. Currently, there are very large disproportions at the level of KBE in the countries, macro-regions, and regions of the EU. It also translates into their socio-economic situation and thus into competitiveness and innovation. The highest level of KBE is in north-western and central Europe countries, while the lowest is in the countries of eastern and south-eastern Europe. This regularity also applies to macro-regions and regions located in these countries.