Question

Why did the first world war happen​

Answer 1

Explanation:

The immediate cause of World War I that made the aforementioned items come into play (alliances, imperialism, militarism, nationalism) was the assassination of Archduke Franz Ferdinand of Austria-Hungary. ... When Russia began to mobilize due to its alliance with Serbia, Germany declared war on Russia.

Includes event: Assassination of Archduke Franz Ferdinand

Military personnel involved: James Gresham, Samuel Woodfill

End date: November 11, 1918

Answer 2

Answer:

$\huge \red{AηsωeR}$✍

The immediate cause of World War I that made the aforementioned items come into play (alliances, imperialism, militarism, nationalism) was the assassination of Archduke Franz Ferdinand of Austria-Hungary. ... When Russia began to mobilize due to its alliance with Serbia, Germany declared war on Russia.

Includes event: Assassination of Archduke Franz Ferdinand

Military personnel involved: James Gresham, Samuel Woodfill

End date: November 11, 1918