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 ... right from 1914 to see 1914 map and to the left from 2014 ...

dramatically redrew the maps of Europe, and set the stage for the 20th Century.