If you look at a map of Europe today, it’s hard to imagine what it might look like in 100 years. It might be much the same as it is now, or it could be totally different, with new countries added and border lines changed.
Consider the situation 100 years ago. One could never have imagined the breakup of the German Empire and the Austro-Hungarian Empire. Who could have imagined the creation of Czechoslovakia and Yugoslavia?
The UK has voted to leave the EU. Crimea is now Russian. Catalonia is currently in the news. It wants independence from Spain. Who knows what the outcome will be?