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Battle of Marne
The Battle of the Marne was important because it stopped the German army from reaching Paris, changing the course of World War I and leading to a long period of fighting in trenches. -
Death of Archduke Francis Fernand
The assassination of Archduke Franz Ferdinand led to World War I because it increased tensions between countries and triggered alliances. -
Austria-Hungary declares war on Serbia
Austria-Hungary declared war on Serbia because it blamed Serbia for the assassination of Archduke Franz Ferdinand. -
Start date WW1
World War I started because national rivalries and alliances turned the assassination of Archduke Franz Ferdinand into a larger conflict between major powers. -
France Invades Alsace
France invaded Alsace to get back land it had lost to Germany in the past and to protect itself from the German threat. -
Austro-Hungary invades Russia
Austria-Hungary invaded Russia to fight against its enemy and help Germany during World War I. -
Alied forces land on the Gallipoli Peninsula
The Allies landed on the Gallipoli Peninsula to open a new front, help Russia, and try to defeat the Ottoman Empire during World War I. -
Italy declares war on Austria-Hungary
Italy declared war on Austria-Hungary to join the Allies and gain territory during World War I. -
Germany starts to attack on Verdun
Germany attacked Verdun to hurt the French army and try to win the war. -
German submarine sinks the passsenger liner Lusitania
A German submarine sank the passenger ship Lusitania to disrupt supplies to Britain during World War I. -
The United States delcare war on Germany
The United States declared war on Germany to join the fight against the Central Powers in World War I. -
American combat forces arrive in France
American combat forces arrived in France to help the Allies fight against Germany in World War I. -
Russia signs armistice with Germany
Russia signed an armistice with Germany to end fighting and focus on its own internal issues during World War I. -
Fourteen points required for peace
The Fourteen Points were President Wilson's ideas for peace after World War I to help prevent future wars. -
United States forces are victorious in the Battle
United States forces won the Battle to help defeat the enemy in World War I. -
Ending of Worl War I
World War I ended when an armistice was signed, stopping the fighting between the Allies and Germany.