Fortunately, there’s an interactive map that can help with that. As Boing Boing explains, TimeMap.org combines the what, who, and where of history into one convenient world map. Use the timeline ...

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.

Britain and its Empire lost almost a million men during World War One; most of them died on the Western Front. Stretching 440 miles from the Swiss border to the North Sea, the line of trenches ...