Answer :
The statement is true; World War I unfolded quickly in 1914, initiated by the assassination of Archduke Franz Ferdinand, which escalated due to complex alliances and nationalistic tensions into a full-scale war.
The sequence of events in 1914 leading from peace in Europe to the outbreak of World War I did indeed occur with stunning rapidity, supporting the statement as true (a) True. The assassination of Archduke Franz Ferdinand of Austria-Hungary by a Serbian nationalist set off a chain reaction of military mobilizations and declarations of war, catalyzed by a complex web of alliances, imperial ambitions, and nationalistic fervor. Major powers like Germany, Austria-Hungary, and the Ottoman Empire faced off against Serbia, Russia, France, and Great Britain. By August 1914, a full-scale war had engulfed Europe, shattering the long-standing European peace and plunging the continent into a devastating conflict.
