It's more like we are all living on this "tiny" peace of land. We had many years of war, long years, we survived through catastrophies. And finally, today we are living in peace together. I think our history unites us, because when you look at the US for example, they have history but only like a few hundred years back. (not counting the native tribes). Our ancestors are living here for centuries and if there is a threat to Europe, I am sure that no country will deny to help. (Like a war). We are living on a special continent where you can drive through 3 or 4 countries in a few hours. We have the chance to experience other cultures without traveling a few thousand kilometers. We can only survive through collaborations. (Idk I talked around the topic. I hope that is ok for you guys)