# data[].attributes.headline
A German invasion of France is stopped in the First Battle of the Marne, causing the Schlieffen Plan to fail.  

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A German invasion of France is stopped in the First Battle of the Marne, causing the Schlieffen Plan to fail.  

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September 6–12, 1914

# data[].attributes.headline
Archduke Franz Ferdinand and his wife, Sophie the Duchess of Hohenburg, are killed by Bosnian Serb nationalist Gavrilo Princip.  

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Archduke Franz Ferdinand and his wife, Sophie the Duchess of Hohenburg, are killed by Bosnian Serb nationalist Gavrilo Princip.  

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June 28, 1914

# data[].attributes.headline
Austria-Hungary declares war on Serbia.  World War I begins. 

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Austria-Hungary declares war on Serbia.  World War I begins. 

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28 de Julio de 1914

# data[].attributes.headline
The United States of America declares neutrality as Europe erupts in war. 

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The United States of America declares neutrality as Europe erupts in war. 

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August 4, 1914.

# data[].attributes.headline
The Germans conduct their first air-raid on the city of Paris, France. 

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The Germans conduct their first air-raid on the city of Paris, France. 

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6 de agosto 1914

# data[].attributes.headline
The Battle of Somme begins.  In five months, the casualty count is horrific: 419,000 British, 194,000 French and 650,000 Germans dead for five miles of land. 

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The Battle of Somme begins.  In five months, the casualty count is horrific: 419,000 British, 194,000 French and 650,000 Germans dead for five miles of land. 

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Agosto de 1914

# data[].attributes.headline
The Russians are defeated at the Battle of Tannenberg. On the eastern front, Germans shatter the Russian Second Army and take over 92,000 prisoners at the Battle of Tannenberg. 

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The Russians are defeated at the Battle of Tannenberg. On the eastern front, Germans shatter the Russian Second Army and take over 92,000 prisoners at the Battle of Tannenberg. 

# data[].attributes.body
26 de Agosto de 1914

# data[].attributes.headline
The Japanese attack and capture Tsingtao, China, which had been controlled by the Germans since 1898 

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The Japanese attack and capture Tsingtao, China, which had been controlled by the Germans since 1898 

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13 de septiembre - 7 de noviembre de 1914

# data[].attributes.headline
The First Battle of Ypres, a trench battle, takes place. Ypres was a Belgian city and communications hub, that was essential to both sides. The Germans give up their offensive by November 24 as winter and stormy weather set in. 

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The First Battle of Ypres, a trench battle, takes place. Ypres was a Belgian city and communications hub, that was essential to both sides. The Germans give up their offensive by November 24 as winter and stormy weather set in. 

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19 de Octubre de 1914

# data[].attributes.headline
The Christmas truce was observed on the Western front. 

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The Christmas truce was observed on the Western front. 

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December 24, 1914

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In the Second Battle of Ypres, the Germans used a chlorine gas; more than 10,000 Allied troops are affected, over half of whom died.  

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In the Second Battle of Ypres, the Germans used a chlorine gas; more than 10,000 Allied troops are affected, over half of whom died.  

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April 22–May 25, 1915

# data[].attributes.headline
The  passenger ship Lusitania is attacked by a German submarine and sinks in British waters. 1,198 civilians drown, including many women and children and 128 U.S. citizens.

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The  passenger ship Lusitania is attacked by a German submarine and sinks in British waters. 1,198 civilians drown, including many women and children and 128 U.S. citizens.

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7 de mayo de 1915

# data[].attributes.headline
The months long Battle of Verdun in France begins.

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The months long Battle of Verdun in France begins.

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21 February to 18 December 1916

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The British use tanks on the battlefield for the first time. 

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The British use tanks on the battlefield for the first time. 

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15 de Septiembre de 1916

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The Americans learn of the Zimmerman telegram, in which the Germans bribed Mexico to attack the United States. 

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The Americans learn of the Zimmerman telegram, in which the Germans bribed Mexico to attack the United States. 

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En enero de 1917

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Germany threatens submarine warfare against ships from neutral countries.

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Germany threatens submarine warfare against ships from neutral countries.

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1 de Febrero de 1917

# data[].attributes.headline
American President Woodrow Wilson asks Congress to declare war against the Germans and their allies. 

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American President Woodrow Wilson asks Congress to declare war against the Germans and their allies. 

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2 de Abril 1917

# data[].attributes.headline
The Germans smuggled Vladimir Lenin into Russia where he leads the Bolshevik Revolution.

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The Germans smuggled Vladimir Lenin into Russia where he leads the Bolshevik Revolution.

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9 de Abril de 1917

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On the first day of the draft, millions of American men register for service under the Selective Service Act  

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On the first day of the draft, millions of American men register for service under the Selective Service Act  

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18 de Mayo de1917

# data[].attributes.headline
Treaty of Brest-Litovsk is signed by Soviet Russia and Germany. Germany sets harsh terms and Russia is out of the war. 

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Treaty of Brest-Litovsk is signed by Soviet Russia and Germany. Germany sets harsh terms and Russia is out of the war. 

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March 3, 1918

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French and American forces of the 3rd, 28th, 32nd, and 42nd Divisions go ‘over the top’ on their offensive at Aisne - Marne.

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French and American forces of the 3rd, 28th, 32nd, and 42nd Divisions go ‘over the top’ on their offensive at Aisne - Marne.

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18 de Agosto de 1918

# data[].attributes.headline
The Treaty of Versailles is signed, ending the war and punishing Germany severely. 

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The Treaty of Versailles is signed, ending the war and punishing Germany severely. 

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25 de Junio de 1919