The two leaders secretly plan to divide Poland and other parts of Eastern Europe between them ... Britain and France declare war on Germany. World War II begins. May: As Germany marches into ...

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 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.