The catalyst for World War I, the assassination of Archduke Ferdinand of Austria and his wife, occurred on June 28, 1914. Despite military and diplomatic action immediately following the assassination, war was not officially declared for another month. On July 28, 1914 Austria-Hungary declared war on Serbia. In an almost domino effect, country after country followed suit, declaring war on each other throughout the month of August, until the majority of Europe was consumed. The United States did not enter the War until 1917. For a more thorough look at the outbreak of World War I, visit The Encyclopedia Britannica's website and their entry on World War I.
The Austrian-Hungarians were first to declare war with the Serbs.
After the assassination of Archduke Ferdinand Austria-Hungary declared war on Serbia. Russia declared war on Austia-Hungary so Germany declared war on Russia, France then declared war on Germany and after the invasion of Belgium by Germany, England also declared war on the Germans. Also on the side of the axis were Bulgaria and the Ottoman Empire.
France went into World War 1 because it had an alliance with Russia. When Germany declared war on Russia, France went to help its ally.
Russia after it began to mobilize troops to the German border.
Italy
my ballsack
on the battlefield of World War 1
The Austrian-Hungarians were first to declare war with the Serbs.
When the British declared war on the Triple Alliance.
war was declared on 28th july 1914
Serbia Serbia
August 1th 1914
World War 2 started on 1 September 1939 when Germany invaded Poland. Britain and France then declared war on Germany on 3 September 1939.
War was declared.
April 7, 1917. Declared war on Germany.
Great Britian declared war on Germany.
Austro-Hungarian Archduke Franz Ferdinand was assinated by Serbian nationalists. Austria declared war on Serbia. Russia, allied with Serbia, declared war on Austria, Germany declared war on Russia, England and France declared war on Both.