A century ago, a fierce global war centered in Europe was witnessed. At the end of the four-year madness, more than nine million combatants and seven million civilians were killed.
This year, the world is commemorating a centenary since the Word War 1 erupted after the British declared a war against Germany in August 4, 1914.
The real cause of the war is said to be the insurgence of imperialism in Europe during the 1890s.
However, the immediate trigger of the war was the assassination of Archduke Franz Ferdinand of Austria, heir to the throne of the Austria-Hungary.