The paper summarizes the results of a qualitative study that aimed to identify the positive outcomes and opportunities, as well as the risks related with the identity building in migration and living in a multicultural context. Research consisted of a 7-year longitudinal case study, during which the life-stories, conflicts, crises, and problem-solving strategies of 23 young people of Italian origin with migration experiences -- some of which were still living in Southern Germany and some of which had returned to Southern italy -- were observed. The sample was composed of both adolescents with intellectual disabilities or other psychological and social disorders and adolescents who seemed to have benefited from living and growing up in different cultures. From the biographies it was possible to identify the main risk and protective factors related to migration and life in a multicultural context, and the adequate coping ability associated with their development. Based on the main findings of the study it was also possible to hypothesize that migration can inhibit or facilitate the fulfillment of fundamental human needs. So, the qualitative data was analyzed in order to identify the needs which seemed to be related with the harmonious development of the personality and a tentative theory of fundamental needs of human development was proposed. Finally, the results suggest that intercultural education can play an important role in determining whether subjects experience enrichment and growth or increasing difficulties or mental illnesses and social disorders. Therefore the paper takes the position that education can be an effective measure for fostering stable, flexible and multiple European identities. Given the research results, intercultural education, as developed and applied in a European context, can be considered as the most appropriate approach.