Costa, Bruno2023-06-122023-06-122023-03Costa, B.F. (2023). From European unity to the challenges of the 21st century. In B.F. Costa (ed.), European Identity and Citizenship – the challenges of European Integration. Lisboa: Edições Sílabo.978-989-561-299-4http://hdl.handle.net/10400.6/13358The European project is marked by decades of achievements and successes, in a path that has seen advances and setbacks regarding the debate between institutional deepening and the enlargement of the EU to new Member States. This is a debate that has been fueled by different political options and changes in the institutional framework of the European Union, namely at the level of «informal decision-making directories» that condition and write the history of the European project. The path of success adopted by European leaders is undeniable, in a project started with 6 founding countries and which today brings together 27 Member States, with several countries following the path of accession. This path is fueled by the sharing of a common identity and the pursuit of improving living conditions, in a message that has been disseminated over decades and implemented by a spirit of solidarity between peoples.engEuropean projectEuropean Unionbook part