WORLD WAR ONE
World War One started very rapidly.
Let's see how the world become involved in its biggest war in less than a month.
JUNE 28, 1914
Archduke Ferdinand of Austria-Hungary is assassinated by radicals in Serbia
JULY 28, 1914
Austria-Hungary declares war on Serbia.
JULY 31, 1914
Russia mobilizes its forces to protect Serbia, its ally.
AUGUST 1, 1914
Germany declares war on Russia to protect Austria-Hungary, its ally.
AUGUST 3 and 4, 1914
Germany also declares war on France and neutral Belgium.
AUGUST 4 and 6, 1914
Britain declares war on Germany to protect its allies, so Austria-Hungary declares war on Russia to protect Germany.
It took only about a week for all of Europe to be involved in the greatest war the world has ever seen. And how?