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Archduke was the heir to the Austria-Hungarian throne and was killed by the Serbian terrorist group named black hand. He was killed in Sarajevo, Bosnia. -
Austria-Hungary declares war on Serbia, beginning World War I. -
Germany invades Luxembourg and Belgium. France invades Alsace. British forces arrive in France. Nations allied against Germany begin to declare War -
A German U-boat torpedoed the British-owned steamship Lusitania, killing 1,195 people including 128 Americans. -
Italy stepped down from the triple alliance and soon after declared war on their former ally Austria-Hungary. -
The French Resistance ultimately halted the German advance. Both sides faced major casualties with both sides being as stubborn as the other. -
The telegram said that if Germany went to war with the United States, Germany promised to help Mexico recover the territory it had lost during the 1840s, including Texas, New Mexico, California, and Arizona. -
After many pushes from Germany the US Senate voted on declaring war on Germany and its ally Austria-Hungary -
American combat forces arrive in France. -
This period saw Russia abolish its monarchy and adopt a socialist form of government following two successive revolutions and a bloody civil war. -
President Woodrow Wilson presents to Congress his outline of the Fourteen Points required for peace. These are used in the Treaty later on. -
Russia signs a treaty with the Central Powers ending its participation in World War I. -
The Treaty of Versailles was signed by Germany and the Allied Nations on June 28, 1919, formally ending World War One. The terms of the treaty required Germany to pay financial reparations, disarm, lose territory, and give up all of its overseas colonies. -
The League of Nations was the first worldwide intergovernmental organization whose principal mission was to maintain world peace. It was made in the world peace Conference -
Reintroduced a measure of stability to the economy and allowed the Soviet people to recover from years of war