-
Assassination of Archduke Franz Ferdinand
The assassination of Archduke Franz Ferdinand of Austria, heir presumptive to the Austro-Hungarian throne, and Franz Ferdinand's wife Sophie, Duchess of Hohenberg, occurred on 28 June 1914 in Sarajevo when Gavrilo Princip mortally wounded them. -
Trench Warfare, Poison Gas, and Machine Guns
America entered nearly three years after the war began, joining Britain, France, and Russia in the fight against Germany and the Austro-Hungarian Empire. When it ended on Nov. 11, 1918, more than 4.7 million Americans served and some 115,000 died.
The world's first mechanized war introduced enhanced weaponry and equipment, most of it designed to take lives but some of it aimed at saving lives. -
Sinking of the Lusitania
The sinking of the Cunard ocean liner RMS Lusitania occurred on Friday, 7 May 1915 during the First World War, as Germany waged submarine warfare against the United Kingdom which had implemented a naval blockade of Germany. -
Zimmerman Telegram
The Zimmermann Telegram was a secret diplomatic communication issued from the German Foreign Office in January 1917 that proposed a military alliance between Germany and Mexico. If the United States entered World War I against Germany, Mexico would recover Texas, Arizona, and New Mexico. -
Russian Revolution
The Russian Revolution was a period of political and social revolution across the territory of the Russian Empire which started with the abolishment of monarchy and concluded with the establishment of the Soviet Union by the Bolsheviks and the end of the civil war. -
U.S. entry into WWI (1917)
The date of US entry into WW1 was April 6, 1917, when the nation was drawn into World War 1 on the side of the Allies. The United States of America entered the conflict, two and a half years after the war had begun on July 28, 1914, and declared war on Germany on April 6, 1917 -
Battle of Argonne Forest (1918)
The Meuse–Argonne offensive was a major part of the final Allied offensive of World War I that stretched along the entire Western Front. It was fought from September 26, 1918, until the Armistice of November 11, 1918, a total of 47 days. -
Armistice
The Armistice of 11 November 1918 was the armistice signed at Le Francport near Compiègne that ended fighting on land, sea, and air in World War I between the Allies and their opponent, Germany. Previous armistices had been agreed with Bulgaria, the Ottoman Empire and the Austro-Hungarian Empire -
Woodrow Wilson’s Fourteen Points
The Fourteen Points was a statement of principles for peace that was to be used for peace negotiations in order to end World War I. The principles were outlined in a January 8, 1918, speech on war aims and peace terms to the United States Congress by President Woodrow Wilson -
Treaty of Versailles
The Treaty of Versailles consisted of 15 parts with 440 articles. It stripped Germany of their Army, Navy, and Airforce; prohibited Germany to create or possess certain types of weapons; reassigned Germany borders; and made Germany liable for billions of dollars of reparations under the War Guilt Clause
