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The main cause was the assassination on Franz Ferdinand and they had many new technologies such as tanks mustard gas and machine guns

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I think the assassination was the main cause.

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The event that sparked the war into motion was the assassination of Franz Ferdinand. The main cause was nationalism, however militarism, alliances, and imperialism also supported starting the war. The new technologies of the war consisted of artillery shells, poison gas, flamethrowers, trench guns, and planes.

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I think the main cause was the assassination of Ferdinand. New technology that was used was gas, tanks, machine guns, and wireless communication.

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I think the main cause for WW1 is Imperialism. New technologies such as poison gas, tanks, planes, and machine guns all make WW1 a "modern" war.

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I think the main cause was Franz Ferdinand being assassinated. Tanks, machine guns and gas were the modern inventions.

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I think that the main cause for WW1 was M.A.I.N because everyone had been growing armies but they didn't have a reason to use them until the war had started and everyone wanted to use their armies and new technologies that they haven't used yet in a war like the flamethrower and tanks.

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i think the main cause of the was was Franz ferdinand getting shot. and it was the first modern war because it had tanks, machine guns, and mustard gas.

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i think the main cause of the was was Franz ferdinand getting shot. and it was the first modern war because it had tanks, machine guns, and mustard gas.

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The assassination of  Franz Ferdinand.  telephones, wireless communication, and tanks were some new technologies in ww1

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The immediate cause of World War I that made the aforementioned items come into play (alliances, imperialism, militarism, nationalism) was the assassination of Archduke Franz Ferdinand of Austria-Hungary. In June 1914, a Serbian-nationalist terrorist group called the Black Hand sent groups to assassinate the Archduke.

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Nationalism was one of the main causes of the war.Some of the new technologies was poison gas, tanks, and airplanes.

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I think the main cause of WW1 was imperialism, because they were wanting to increase their power and influence across the world. 

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I think the main cause of WW1 was imperialism, because they were wanting to increase their power and influence across the world. 

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I feel like the main reason for WWI was imperialism, and how every nation wanted to show how big their power had gotten. The last straw that erupted the war was when Franz had gotten shot. As they got to war they had new technology like poison gas, tanks, and machine guns. All this new technology was invented just for one goal, and it was to kill.

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I believe the main cause of WW1 is imperialism. Poison Gas, Tanks, and Flamethrowers were inventions during WW1.

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I believe the main cause of WW1 is imperialism. Poison Gas, Tanks, and Flamethrowers were inventions during WW1.