European Union - Why Did the European Countries Feel the Need to Unite?

The question of what were the factors that drove the European Union to unite requires a lot of research on the European Union itself. My hypothesis consisted of several reasons for the unification of Europe. Reasons were both economical and political and they included the need for reconstruction after the World War II, the fear of inter-European wars, the fear of the Cold War, stopping the spreading of communism and for the future peace.
The first reason is the fact that the post World War II Europe was devastated. …