Beginning of World War 1 (Assassination of Archduke Francis Ferdinand…
Beginning of World War 1
Assassination of Archduke Francis Ferdinand
Austria-Hungary declares war on Serbia July 28, 1914
Germany, Austria-Hungary's ally declares war on Russia.
Germany declares war on neutral Belgium... So they can attack France
German U-Boat's sink British passenger line
Germany send Zimmerman Note, proposing alliance with Mexico to attack United States; intercepted by Britain.
Russia, Serbia's ally mobilizes their army to help.
France, Russia's ally declares war on Germany
Great Britain, who has treaties with Belgium and France declares war on Germany.
United States declares war on Germany April 2, 1971