June 28........ Archduke Francis Ferdinand was killed

July 28.......... Austria-Hungry declared war on Serbia. Several other wars followed the next week

Aug. 4........... Germany invaded Belgium and started the fighting

Aug. 10........ Austria and Hungry invaded Russia, starting the fighting on the Eastern Front

Sept. 6-9..... The allies stopped the Germans in France in the First Battle of

Marne.

Feb. 18.................. Germany started to blockade Great Britain

April 25.................. Allied troops landed on the Gallopoli Peninsula

May 7..................... A German submarine sank the liner Lusitania

May 23................... Italy declared war on Austria and Hungry then an Italian front soon developed

Feb. 21................. The Germans opened the Battle of Verdun

May 31-June 1.. The British fleet fought the German fleet in the Battle of Jutland

July 1..................... The Allies started the Battle of the Somme

Feb. 1.................... Germany resumed unrestricted submarine warfare

April 6.................... The United States declared war on Germany

June 24................. American troops began landing in France

Dec. 15.................. Russia signed an armistice with Germany, ending the fighting on the Eastern Front

Jan. 8...................... President Woodrow Wilson announced his Fourteen Points as the basis for peace

March 3................. Russia signed the Treaty of Brest-Litovsk

March 21.............. Germany started the first of its final 3 offensives on the Western Front

Sept. 26................. The Allies started their final offensives on the Western Front

Nov. 11.................. Germany signed an armistice ending World War I

The murder of Archduke Francis Ferdinand started World War I. The other causes as well as the murder were (1) the rise of nationalism, (2) a buildup of military might, (3) completion for colonies, and (4) a system of military alliances.