Faced with the dominant United States of America, conquering China and even declining Russia, Europe finally understood 15 years ago that if it was an economic giant, it was very weak politically. The peoples of Europe have shown their will to have a common destiny, not only economically but also on a daily basis.
Instant translation software has fostered communication between individuals, fast and efficient means of transport have intensified travel across the continent, the dissemination of the culture of all European countries has further encouraged travel and the desire to get to know each other better. It has become easy to go to work or live in another country.
That is why today the Europeans have managed to impose a single and united Europe with a strong federal state that conducts the politics of the continent, while leaving an area of freedom to each federated state.