Archduke Francis Ferdinand is assassinated in Sarajevo
Austria-Hungary declares war on Serbia, beginning World War I.
Austria-Hungary moves to invade Russia
Allied forces stop Germans from pushing into France during First Battle of the Marne
Allied forces land on the Gallipoli Peninsula of the Ottoman Empire.
German submarine sinks the passenger liner Lusitania during crossing from New York to Liverpool, England (128 Americans Die)
Italy declares war on Austria-Hungary
Naval Battle of Jutland takes place between British and German fleets
Allies begin the push at the battle of Somme
Germany returns submarine warfare after the sinking of the Lusitania.
U.S Declares war on Germany for the first time
Americans arrive in france
Russia signs armistice with Germany
Germany starts its last offense of WWI
America first major independent fight (the battle of Cantigny)
American forces stop German attempt to cross the Marne River
Germany Signs armistice at Compiegne ending the war
Allied and German representatives sign treaty of Versailles. The United States signs treaty of guaranty, pledging to defend France in case of an unprovoked attack by Germany
