Long ago, a big war started.
Long ago, a big war started. 

The Central Powers were a group of nations in a big war. 
Germany and Austria-Hungary were the first two members. They made an alliance in 1879. 



The Central Powers were one of the two main groups in World War I. 
The group grew larger as the war went on. 

The war began because of a chain of events in July 1914. 

Many different places were part of these empires. 
In the end, the Central Powers lost the war. 
The Central Powers were one of the two major military coalitions during World War I (1914–1918). This group was also known as the Central Empires or the Quadruple Alliance. The name comes from the geographic location of its member states. They were situated in central Europe, positioned between the Russian Empire to the east and France and the United Kingdom to the west.
The alliance began with a long-standing bond between the German Empire and the Austro-Hungarian Empire. These two nations had been allies since 1879. While Italy had previously been part of a Triple Alliance, it did not join the Central Powers during the war. Instead, Italy later joined the opposing Allied Powers. The group grew as other nations joined the conflict after it had already started. The Ottoman Empire entered the war in late 1914, and the Kingdom of Bulgaria joined in 1915. 
The outbreak of war followed a rapid chain of political and military events in July 1914. It began after the assassination of Archduke Franz Ferdinand, the heir to the Austro-Hungarian throne. Austria-Hungary viewed the assassination as a threat to its stability. They sent an ultimatum to Serbia, demanding a full investigation into government involvement. When Serbia did not comply fully, Austria-Hungary declared war. Germany promised to support its ally, Austria-Hungary, against potential Russian intervention. 
As tensions rose, the mobilization of armies triggered a wider conflict. Russia mobilized its military to support Serbia. Germany viewed this mobilization as a provocation and declared war on Russia on August 1, 1914. This action led France, an ally of Russia, to prepare for war as well. Germany then declared war on France on August 3. To avoid a two-front war, Germany implemented the Schlieffen Plan. This plan involved moving German forces through neutral Belgium to attack Paris. 
The invasion of Belgium changed the scope of the war. Because the invasion violated the 1839 Treaty of London, which guaranteed Belgian neutrality, Great Britain declared war on Germany. The Ottoman Empire joined the Central Powers later in 1914. They were bound to Germany by a secret treaty and strong economic ties. One major project was the Berlin-to-Baghdad railway. 
The members of the Central Powers controlled vast territories and colonies. The Austro-Hungarian Empire was a complex multinational state. It included Austria and Hungary, along with the Kingdom of Bohemia and the Kingdom of Croatia-Slavonia. 

By 1918, the Central Powers were defeated by the Allied Powers. The alliance dissolved as the war came to an end. The conflict resulted in massive losses, as shown in data regarding military fatalities.
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