when did the world war one staeted?
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The assassination of Austrian Archduke Franz Ferdinand on June 28, 1914, was the trigger.
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According to Wikipedia - \n\n"The First World War also saw the use of chemical warfare and aerial bombardment, both of which had been outlawed under the 1907 Hague Convention"
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World War 1 fought 1914 to 1918.\nDem.President Thomas Woodrow Wilson in office 1913 to 1921.
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World War I (abbreviated WWI), also known as the First World War, the Great War and "The War to End All Wars" was a global military conflict that took place mostly in Europe between 1914 and 1918. It was a total war which left millions dead and helped to shape the modern world.\n\nThe Allied Powers, led by France, Russia, the United Kingdom, and later Italy and the United States, defeated the Central Powers: Austria-Hungary, Germany, Bulgaria and the Ottoman Empire.\n\nMuch of the fighting in World War I took place along the Western Front, within a system of opposing manned trenches and fortifications (separated by a "no man's land") running from the North Sea to the border of Switzerland. On the Eastern Front, the vast eastern plains and limited rail network prevented a trench warfare stalemate from developing, although the scale of the conflict was just as large. Hostilities also occurred on and under the sea and — for the first time — from the air. More than nine million soldiers died on the various battlefields, and millions more civilians perished.\n\nThe war caused the disintegration of four empires: the Austro-Hungarian, German, Ottoman, and Russian. Germany lost its overseas empire, and states such as Czechoslovakia and Yugoslavia were created, or recreated, as was the case with Poland.\n\nWorld War I created a decisive break with the old world order that had emerged after the Napoleonic Wars, which was modified by the mid-19th century’s nationalistic revolutions. The results of World War I would be important factors in the development of World War II 21 years later.
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The assassination in Sarajevo; this event was the final catalyst for wide-ranging war in Europe\nEnlarge\nThe assassination in Sarajevo; this event was the final catalyst for wide-ranging war in Europe\n\nOn June 28, 1914, Franz Ferdinand, Archduke of Austria and heir to the Austro-Hungarian throne, was assassinated in Sarajevo by pan-Serbian nationalists. The Archduke was there to assert imperial authority over a disputed province. Though this assassination is usually considered the immediate trigger for the war, its origins can be traced back to the complex web of alliances and counterbalances that developed between the various European powers after 1871.
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The First World War, or (before 1939) the Great War, was a world conflict lasting from August 1914 to the final Armistice on November 11, 1918. The Allied Powers (led by the United Kingdom, France and until 1917 Russia , and, after 1917, the United States) defeated the Central Powers (led by the German Empire, Austria-Hungary and the Ottoman Empire). \n\nThe Allies won.
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The Versailles Peace Treaty ending World War I was signed on June 28, 1919, about 7 months after the Armistice stopping the fighting on November 11, 1918. It was one of the mos important treaties of the 20th century. It had a huge impact on the international status of Germany, impacting the country territorially, militarily, and economically. Germany was made a pariah country and largely blamed for the start of the War. \n\n\nI. Open covenants of peace, openly arrived at, after which there shall be no private international understandings of any kind but diplomacy shall proceed always frankly and in the public view. \n\nII. Absolute freedom of navigation upon the seas, outside territorial waters, alike in peace and in war, except as the seas may be closed in whole or in part by international action for the enforcement of international covenants.\n\nIII. The removal, so far as possible, of all economic barriers and the establishment of an equality of trade conditions among all the nations consenting to the peace and associating themselves for its maintenance.\n\nIV. Adequate guarantees given and taken that national armaments will be reduced to the lowest point consistent with domestic safety.\n\nV. A free, open-minded, and absolutely impartial adjustment of all colonial claims, based upon a strict observance of the principle that in determining all such questions of sovereignty the interests of the populations concerned must have equal weight with the equitable claims of the government whose title is to be determined.\n\nVI. The evacuation of all Russian territory and such a settlement of all questions affecting Russia as will secure the best and freest cooperation of the other nations of the world in obtaining for her an unhampered and unembarrassed opportunity for the independent determination of her own political development and national policy and assure her of a sincere welcome into the society of free nations under institutions of her own choosing; and, more than a welcome, assistance also of every kind that she may need and may herself desire. The treatment accorded Russia by her sister nations in the months to come will be the acid test of their good will, of their comprehension of her needs as distinguished from their own interests, and of their intelligent and unselfish sympathy. \n\nVII. Belgium, the whole world will agree, must be evacuated and restored, without any attempt to limit the sovereignty which she enjoys in common with all other free nations. No other single act will serve as this will serve to restore confidence among the nations in the laws which they have themselves set and determined for the government of their relations with one another. Without this healing act the whole structure and validity of international law is forever impaired. \n\nVIII. All French territory should be freed and the invaded portions restored, and the wrong done to France by Prussia in 1871 in the matter of Alsace-Lorraine, which has unsettled the peace of the world for nearly fifty years, should be righted, in order that peace may once more be made secure in the interest of all. \n\nIX. A readjustment of the frontiers of Italy should be effected along clearly recognizable lines of nationality.\n\nX. The peoples of Austria-Hungary, whose place among the nations we wish to see safeguarded and assured, should be accorded the freest opportunity to autonomous development. \n\nXI. Rumania, Serbia, and Montenegro should be evacuated; occupied territories restored; Serbia accorded free and secure access to the sea; and the relations of the several Balkan states to one another determined by friendly counsel along historically established lines of allegiance and nationality; and international guarantees of the political and economic independence and territorial integrity of the several Balkan states should be entered into. \n\nXII. The Turkish portion of the present Ottoman Empire should be assured a secure sovereignty, but the other nat
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In England we consider WW1 to be from 1914 until 1918 ('...the eleventh hour of the eleventh day in the eleventh month' - Armistice Day).\n\nWW2 started in 1939 with a declaration of war by Britain and France following the invasion of Poland.\n\nWe remember VE Day in May, 1945 (Victory in Europe) and VJ Day in September, 1945 (Victory against Japan).\n\nHave a look at these two pages - especially the second:
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G'day A B,\n\nThank you for your question.\n\nThe end of World War I saw the US recognised as a major power for the first time. It became the world's greatest creditor unlike today. It had relatively few casualties with 53,402 battle deaths and 63,114 other deaths in service.\n\nI have attached sources for your reference.\n\nRegards
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September 1, 1939 for the war in Europe, December 7th 1941 United States enters World War II in both Europe and Asia.\nGermany declared war on the United States on December 10th, 1941.Germany surrenders May 8th 1945, Japan bombed on both August 6 and again on the 9th formally surrenders Sept 1, 1945.
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The underlying causes of World War I were the intense nationalism that permeated Europe throughout the 19th and into the 20th century, the political and economic rivalry among nations, and the military buildup that occurred after 1871, when Germany emerged as a great world power.\nThe assasination of Archduke Francis Ferdinand was just a match to the powder keg.
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Here are some sites dedicated to WWI.  Any library should have some good books that will give you the information you need.  Any history book that covers that time period might be a good place to start. \n\nGood luck with it.
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WWI Peace Settlement\n\nhttp://www.studyworld.com/newsite/ReportEssay/History/WorldWars%5CWWI_Peace_Settlement.htm
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Treaty of Versailles (1919) was the peace treaty which officially ended World War I between the Allied and Associated Powers and Germany. After six months of negotiations which took place at the Paris Peace Conference, the treaty was signed as a follow-up to the armistice signed in November 1918 in Compiègne Forest (which had put an end to the actual fighting). Although there were many agreements to the treaty, one of the more important and recognized agreements required that Germany accept full responsibility for causing the war and, under the terms of articles 231-247, make reparations to certain members of the Allies.
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The war began as a clash between two coalitions of European countries. The first coalition, known as the Allied Powers, included the United Kingdom, France, Belgium, Serbia, Montenegro, and the Russian Empire (see Russia). The Central Powers, which opposed them, consisted of the empires of Germany and Austria-Hungary. Japan joined the Allied Powers in 1914. The Ottoman Empire joined the Central Powers in 1914, as did Bulgaria in 1915. The same year, Italy entered the war on the Allied side. Although the United States initially remained neutral, it joined the Allies in 1917. The conflict eventually involved 32 countries, 28 of which supported the Allies. Some of these nations, however, did not participate in the actual fighting.
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That is a huge question...It can be said to lead all the way back to the Treaty of Versailles ending WWI. \n\nTry this. It's concise. http://ehistory.osu.edu/wwii/timeline.cfm
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The main reson to oppose WWI...\nIt's over.\n\nReally, specify which side your interested in...\n\nThe whole war or just US involvement, etc?