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 ... Europe is based on the lines drawn following the conflict sparked by Princip's bullet. (Pull cursor to the right from 1914 to see 1914 map ...

With the war in Ukraine escalating to new levels in recent weeks, Newsweek has mapped the international perspectives on the conflict.