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Franz was an arhduke of Austria-Este, the Royal Prince of Hungary and of Bohemia. precipitation of Austria-Hungary's declaration of War against Serbia caused the Central Powers and Serbia's allies to delcare war on each other.
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Started after a German-led Ottoman's Army force from Southern Palestine to attack the British Empire. Which would be protecting Suez Canal, before the Sinai and Palestine Campaign of WW1.
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German U-boat submarines raises, while Germany returns to the unrestricted submarine warfare. Previously suspended response to pressure the United States and other neutral countries.
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As the time Austria-Hungary declares war in Russia, Serbia declared war on Germany.
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The Battle Od Salaita Hill was the first to join The East African Campaign and involve British, Indian, Rhodesian and South African Troops. Part of the three-pronged offensive in German, East Africa launched (by General Jan Smuts).
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First battle fought in the Allied attempt to defeat Turkish forces. Being in and around the Palestinian city. Allies managed to force Turkish army completely out od the Sinai Peninsula in Northeastern Egypt. Turkish positions atop the series of ridges running west to east between Gaza and Beersheba.
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Foch's XX Corps participated in the brief invasion of Germany before retiring. So leaving German in counterattck and successfully blocking the Germans of short notice. Order to go west to defend paris, Foch's prestige soared as a result of the Victory at The Marne.
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It was 5 years after the Archduke's assasination that they signed this treaty, to end the state of war between Germany and The Allied Powers.