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Archduke Francis Ferdinand is assassinated by Serbian conspiracy group, the "Black Hand".
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Austria-Hungary issues an ultimatum to Serbia, who refuses one of the orders. https://www.google.ca/search?q=austrian+ultimatum+against+serbia&biw=1424&bih=655&tbm=nws&source=lnms&sa=X&ved=0ahUKEwiGp5K8oJDSAhVE2WMKHaSzDFUQ_AUIBigB&dpr=1#q=austrian+ultimatum+against+serbia
https://image.slidesharecdn.com/originsofww12-101110224459-phpapp02/95/origins-of-ww1-37-638.jpg?cb=1422649343 -
Since Serbia refuses the ultimatum, Austria is outraged an declares War on Serbia. https://www.google.ca/search?q=austrian+declares+war+against+serbia&biw=1424&bih=915&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjn5_68oZDSAhUK82MKHTFRBEYQ_AUICSgC#imgrc=f4pb_-jsFQHYmM:
https://www.google.ca/search?q=austrian+declares+war+against+serbia&biw=1424&bih=915&source=lnms&sa=X&ved=0ahUKEwjajcO7oZDSAhVV-GMKHYnVAjEQ_AUIBSgA&dpr=1 -
Since Germany, at the time, was an Austrian-ally, and Austria-Hungary declared war on Serbia, Serbian allies declared war on Austria Hungary, and as such Germany declared war on all these countries. https://www.historylearningsite.co.uk/world-war-one/timeline-of-world-war-one/
https://c1.staticflickr.com/9/8631/16041553760_de017d66d8_b.jpg -
Germany invades the neutral territory of Belgium as a quick route to France, with intent to initiate the Schlieffen Plan. https://www.historylearningsite.co.uk/world-war-one/timeline-of-world-war-one/
https://www.google.ca/search?q=germany+declares+war+on+russia&biw=1424&bih=915&source=lnms&tbm=isch&sa=X&ved=0ahUKEwih5ZeHo5DSAhVC9GMKHUL7AWUQ_AUIBigB#tbm=isch&q=germany+declares+war+on+france+ww1&imgrc=rQzaLGfWPiUv0M: -
In response to Germany's invasion of the neutral territory of Belgium, Britain declares war on Germany. https://www.google.ca/search?q=britain+declares+war+on+germany+1914&biw=1424&bih=915&source=lnms&sa=X&ved=0ahUKEwjm1-jgpJDSAhUW9GMKHc_kB-EQ_AUIBSgA&dpr=1
https://www.google.ca/search?q=britain+declares+war+on+germany+1914&biw=1424&bih=876&source=lnms&tbm=isch&sa=X&ved=0ahUKEwi7jvfhpJDSAhUC_WMKHUL9A0YQ_AUICCgB#imgrc=D4K0FhAXzptkGM: -
From the Battle of Mons on the French eastern border, the British Expeditionary Force soon follow the French in retreat from the Germans. As a result, Germany invades. https://en.wikipedia.org/wiki/Battle_of_Mons
https://www.google.ca/search?q=britain+declares+war+on+germany+1914&biw=1424&bih=876&source=lnms&tbm=isch&sa=X&ved=0ahUKEwi7jvfhpJDSAhUC_WMKHUL9A0YQ_AUICCgB#tbm=isch&q=battle+of+mons&imgrc=LeohWDo6X7RoPM: -
The Russians are defeated by the Germans in both the battles of Tannenberg and Masuria. https://www.google.ca/search?q=battle+Masurian+Lakes.&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjrx8qOp5DSAhUC8mMKHQ2-B-UQ_AUICCgB&biw=1424&bih=876#tbm=isch&q=battle+of++the+Masurian+Lakes.&imgrc=Q13LvJMjzRvX2M:
https://en.wikipedia.org/wiki/Battle_of_Tannenberg
https://en.wikipedia.org/wiki/First_Battle_of_the_Masurian_Lakes -
German, French, Belgium and British forces all clash from Arras to Nieuport, France. https://en.wikipedia.org/wiki/First_Battle_of_Ypres
https://www.google.ca/search?q=battle+of+ypres&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjuxe3oqJDSAhVK7mMKHS89BYEQ_AUICCgB&biw=1424&bih=876#tbm=isch&q=first+battle+of+ypres&imgrc=YS8XA4fVNtDGKM: -
Turkey enters the war alongside Germany. Trench warfare begins to dominate the western European front.
https://www.historylearningsite.co.uk/world-war-one/timeline-of-world-war-one/
https://www.google.ca/search?q=trench+warfare+wwi&source=lnms&tbm=isch&sa=X&ved=0ahUKEwik78DZ15LSAhUEKGMKHSbaDD8Q_AUICCgB&biw=1440&bih=757#imgrc=ZOll0SzXwxLv_M: -
The first zeppelin raid on Britain takes place.
https://www.historylearningsite.co.uk/world-war-one/timeline-of-world-war-one/
https://www.google.ca/search?q=trench+warfare+wwi&source=lnms&tbm=isch&sa=X&ved=0ahUKEwik78DZ15LSAhUEKGMKHSbaDD8Q_AUICCgB&biw=1440&bih=757#tbm=isch&q=zeppelin+ww1&imgrc=AGKvvF6tMX_BDM: -
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French and British forces attempt to break through fortified German defenses at Artois and Champange, even resorting to gas attacks.
https://www.historylearningsite.co.uk/world-war-one/timeline-of-world-war-one/
https://en.wikipedia.org/wiki/Battle_of_Loos
https://www.google.ca/search?q=trench+warfare+wwi&source=lnms&tbm=isch&sa=X&ved=0ahUKEwik78DZ15LSAhUEKGMKHSbaDD8Q_AUICCgB&biw=1440&bih=757#tbm=isch&q=battle+of+loos+wwi&imgrc=630Kbxm2XnCn1M: -
As the war of attrition took more and more lives, Britain choose to introduce conscription in order to combat the growing loss of soldiers.
https://www.historylearningsite.co.uk/world-war-one/timeline-of-world-war-one/
https://www.google.ca/search?q=trench+warfare+wwi&source=lnms&tbm=isch&sa=X&ved=0ahUKEwik78DZ15LSAhUEKGMKHSbaDD8Q_AUICCgB&biw=1440&bih=757#tbm=isch&q=conscription+in+britain+wwi&imgrc=4GoQ9TiOZSysPM: -
The British and French forces clash along the Somme river, France, against well-defended Germans; staging one of the bloodiest battles in human history.
https://en.wikipedia.org/wiki/Battle_of_the_Somme
https://www.historylearningsite.co.uk/world-war-one/timeline-of-world-war-one/
https://www.google.ca/search?q=battle+of+the+Somme&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjS8Yeb3JLSAhUU2GMKHTUYBUMQ_AUICCgB&biw=1440&bih=789#imgrc=RHO0MZyON6FabM: -
Armored tanks are deployed for the first time in history by the British; they are early in design and fumble greatly through the landscape. http://www.history.com/this-day-in-history/tanks-introduced-into-warfare-at-the-somme
https://www.google.ca/search?q=battle+of+the+Somme&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjS8Yeb3JLSAhUU2GMKHTUYBUMQ_AUICCgB&biw=1440&bih=789#tbm=isch&q=tanks+at+the+Somme&imgrc=qLxeFz-bKEXgdM: -
In order to prevent war supplies from reaching the allies, Germany began to deploy U-boats to heckle trade routes.
https://www.historylearningsite.co.uk/world-war-one/timeline-of-world-war-one/
https://www.google.ca/search?q=battle+of+the+Somme&source=lnms&tbm=isch&sa=X&ved=0ahUKEwjS8Yeb3JLSAhUU2GMKHTUYBUMQ_AUICCgB&biw=1440&bih=789#tbm=isch&q=German+wwi+U-boats&imgrc=ZkRnunBskwPjkM:
https://en.wikipedia.org/wiki/U-boat_Campaign_%28World_War_I%29 -
With the American public growing ever more hostile towards Germany, congress decides to join the war effort alongside the French, British and other allies.
https://en.wikipedia.org/wiki/American_entry_into_World_War_I
https://www.google.ca/search?q=USA+declares+war+on+Germany+wwi&source=lnms&tbm=isch&sa=X&ved=0ahUKEwi8jYSc4JLSAhVN52MKHc6tBlcQ_AUICCgB&biw=1440&bih=789#imgrc=GZbrdz9N3fURWM: -
British tanks in Cambrai, France eventually overwhelm German forces. This historical moment recognized tanks as essential pieces of modern warfare from this day onward.
https://www.google.ca/search?q=British+tanks+win+at+cambrai+wwi&source=lnms&tbm=isch&sa=X&ved=0ahUKEwiUlfKL4pLSAhUI32MKHd2iDpUQ_AUICCgB&biw=1440&bih=789#imgrc=bxokz1JcCIYQDM:
https://www.historylearningsite.co.uk/world-war-one/timeline-of-world-war-one/
http://www.history.com/topics/world-war-i/battle-of-cambrai -
An armistice is signed between the two nations, and Russia pulls out of the war. Two days later, all fighting between Russian and German forces ceases entirely.
https://www.historylearningsite.co.uk/world-war-one/timeline-of-world-war-one/
https://en.wikipedia.org/wiki/Armistice_between_Russia_and_the_Central_Powers
https://en.wikipedia.org/wiki/Armistice_between_Russia_and_the_Central_Powers -
Growing desperate, Germany makes an offensive in Flanders, Belgium.
https://www.historylearningsite.co.uk/world-war-one/timeline-of-world-war-one/
https://www.google.ca/search?q=german+offensive+on+flanders+wwi&source=lnms&tbm=isch&sa=X&ved=0ahUKEwi8wZ-ioJXSAhXGjFQKHbV6BUYQ_AUICSgC&biw=1426&bih=766#imgrc=-8ZZ75VRJzYRTM: -
As the war of attrition had raged for years now, the Allies and Entente have respectively lost much. With the second battle of the Marne came the sad realization of steady defeat for the German forces.
https://www.historylearningsite.co.uk/world-war-one/timeline-of-world-war-one/ -
On this day, British and Turkish representatives alike sign an armistice treaty together; ceasing any further conflict.
http://www.history.com/this-day-in-history/ottoman-empire-signs-treaty-with-allies
https://www.historylearningsite.co.uk/world-war-one/timeline-of-world-war-one/
https://www.google.ca/search?q=Turkey+makes+peace+october+30+wwi&biw=1426&bih=766&tbm=isch&source=lnms&sa=X&ved=0ahUKEwiP5tjyopXSAhVQwmMKHZ0oDU8Q_AUICCgD#imgrc=mEuIrzr1YcRK1M: -
With in's army in shambles, Austria follows in Turkey's footsteps and signs an armistice; this time with Italy.
https://en.wikipedia.org/wiki/Armistice_of_Villa_Giusti
https://www.google.ca/search?q=Austria+Makes+peace+october+30+wwi&biw=1440&bih=789&source=lnms&tbm=isch&sa=X&ved=0ahUKEwi46cnRo5XSAhVD2WMKHcVtB7sQ_AUIBigB#tbm=isch&q=austria+flag&imgrc=hdSnqLOPSPLYAM:
https://www.historylearningsite.co.uk/world-war-one/timeline-of-world-war-one/ -
With the rest of it's once formidable Entente in shambles, Germany bows it's head and recognizes it's own defeat against the Allies. Once Germany signs the armistice, this day forward is recognized globally as the end of WWI.
https://www.historylearningsite.co.uk/world-war-one/timeline-of-world-war-one/
https://www.google.ca/search?q=End+of+WWI&source=lnms&tbm=isch&sa=X&ved=0ahUKEwi2hLPHpZXSAhXGzFQKHdgNApwQ_AUICCgB&biw=1440&bih=789#imgrc=XpyHGdlzDeAMFM:
