What is not generally considered a factor that led to the start of World War I?

The various alliances among the major powers prior to the start of the War

The arms race between Germany and the United Kingdom leading up to the War

The assassination of Archduke Franz Ferdinand of Austria in Sarajevo by groups associated with Serbia

Russian mobilization of its army in defense of Serbia once Austria had declared war

The rise of the Bolsheviks in Imperial Russia

The World War I, also known as the Great War began on 28 July 1914 and ended on 11 November 1918. World War I was one of the deadliest conflicts in history as it led to many deaths.

Over 30 nations declared war between 1914 and 1918. The majority joined on the side of the Allies, including Serbia, Russia, France, Britain, Italy and the United States. They were opposed by Germany, Austria-Hungary, Bulgaria and the Ottoman Empire, who together formed the Central Powers.

The immediate cause of World War I was the assassination of Archdueks Franz Ferdinand of Austro-Hungarian Empire. In June 1914, a Serbian-nationalist terrorist group called the Black Hand sent groups to assassinate the Archdueks Franz Ferdinand.

Hence, the assassination of Archdueks Franz Ferdinand led to the start of World War I across Europe that lasted until 1918.

Hence, option E is correct.

To learn more about World War I refer:

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