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 this new phase, World War One expanded from being a European war fought by European armies to a much wider conflict fought by soldiers from across the world. The Dardanelles Strait was a ...

This series tells the story of how European royal relatives, despite ties of blood and marriage, ended up at war with each other. It explores how World War One brought the continent to its knees ...

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.