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.

One hundred years ago ... dramatically redrew the maps of Europe, and set the stage for the 20th Century.

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 ...

World War One ended 11th November 1918 and took the lives of nine million soldiers. But as Michael Palin discovers, its battlegrounds in Europe are still full of revealing evidence of bitter fighting.

When Britain entered the war ... one’s own. In the 19th century this was seen as an acceptable practice by the European powers. Britain had an empire that covered one quarter of the world map ...