What factors helped unify Europe's different ethnic groups today?

Several factors have contributed to the unification of Europe's diverse ethnic groups today. The European Union (EU) has played a crucial role by promoting economic cooperation, free movement, and shared governance, fostering a sense of common identity. Additionally, cultural exchange through media, travel, and education has encouraged mutual understanding and integration. Lastly, historical events, such as the aftermath of World War II, emphasized the need for collaboration to prevent future conflicts, further strengthening bonds among different ethnicities.