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Archduke Franz Ferdinand and his wife were assassinated in Sarajevo on 28 June 1914. this would lead to Austro-Hungarian. Serbia was blamed for the assassination and allies of Austria-Hungary and Serbia where preparing for war. -
The United Kingdom declaration of war upon Germany. This would add the UK to the war. -
German submarines attacked Lusitania which was a ship that had been carrying 1,959 people including 123 Americans. this would anger Americans. -
Woodrow Wilson was elected to be president barely beating Charles Evans Hughes. -
on January 16, 1917 the British decrypted a telegram sent by German Minister Arthur Zimmermann -
the United States declared war on Germany and entered World War I -
the first 14,000 US infantry troops arrived in France at the port of Saint Nazaire to aid them at war. -
the United States Congress passed the Sedition Act. The Sedition Act was intended to protect the country's participation in World War I by limiting free speech and the expression of opinion that could be seen as negative towards the government or the war effort. -
the day the Armistice was signed, marking the end of fighting in World War I. The Armistice was negotiated by military authorities and was a temporary agreement to end hostilities. -
the Treaty of Versailles was signed in the Hall of Mirrors at the Palace of Versailles, officially ending World War I. Germany was required to pay financial reparations to the Allied countries and lose much land, and military power.