World War I involved 32 nations from 1914 to 1919. It redrew the world map and reshaped many borders in Europe. The collapse of the Russian Empire created Poland, the Baltics, and Finland.

The past 100 years have seen another world war and the rise and fall of the Soviet Union, but much of present-day Europe is based on the lines drawn following the conflict sparked by Princip's bullet.

A survey conducted by Le Grand Continent found that approximately 55% of Europeans believe the risk of war ... for years. Read also: Trump administration weighs reducing NATO role in Europe ...

If they make it to the borders, they are often met with violence and ill-treatment. Again and again their human rights are denied. People come to Europe for different reasons. Many are fleeing ...