World War I Began 100 Years Ago Today -- This GIF Shows How It Became A Global Conflict

One hundred years after the start of World War I, it is still extremely difficult to comprehend just how global a phenomenon the war was. It affected people on every continent and hastened the end of the European empires.  Reddit user Srirachachacha shared this map showing the amazing spread of the war across the world. The GIF does a fascinating job of distinguishing between the key Allied and Central Powers and their colonies, dominions, and territories.  World War I started off solely as ...