The advent of airplanes was a disaster for Western EuropeFor hundreds of year, Muslims tried invading Europe, but were held back by nations at the Europe's border, naturally evolved to fight them - like Romania, Poland, Hungary, etc.But in just a few generations it all crumbled, because Muslims can now avoid it altogether and enter the naive Western European countries via air and invade it this way. And Western Europeans haven't evolved to see them as foes, so they try treating them like fellow Europeans.
