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Austria-Hungary declares war
Austria-Hungary declared war on Serbia due to Serbia not meeting the ultimatum for the assassination of Archduke Franz Ferdinand. -
Russia Mobilises
In response to Austria-Hungary's declaration of war, Russia mobilised her army on July 29th -
Germany Declares War
Germany saw Russia's mobilisation as an act of war, -
The Schlieffen Plan
Germany thought that they would be sneaky and attack France through neutral Belgium. -
Britain Declares War
Britain had an alliance with Russia and France. Britain had also signed a Treaty to protect Belgium in 1838. Britain declared war on Germany. -
Japan Enters The Fight
Due to an alliance with Britain, Japan declared war on Germany. -
Italy Changes Sides
Even though Italy was a part of the triple alliance, she refused to support Germany and Austria-Hungary, claiming that war was their fault. -
Cuba Declared War on Germany
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The United States Steps in
The USA was not interested in getting involved in a "European" war. The United states declared war on Germany. -
Brazil Severed Relations with Germany
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Greece Declared War on Austria-Hungary
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Ecuador Severed Relations with Germany
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Uruguay Severed Relations with Germany