Which event directly triggered the outbreak of World War I in 1914?

Which event directly triggered the outbreak of World War I in 1914?

• A. The assassination of Archduke Franz Ferdinand of Austria by a Bosnian Serb terrorist.
• B. Germany's invasion of Belgium in 1914.
• C. The monarch's objection to the national election of a socialist prime minister in Poland.
• D. The sinking of the Lusitania by German U-boats.

Answer: (A)

The essential idea is that a single act of violence provided the immediate spark that set off a chain reaction among Europe’s tangled alliances. The assassination of Archduke Franz Ferdinand, the heir to Austria-Hungary, by a Bosnian Serb nationalist in 1914 created a crisis that Austria-Hungary moved to punish Serbia for. Because Europe was locked into a web of alliances and mobilization plans, this localized shock quickly pulled in Russia, Germany, France, and Britain, and the result was a rapid slide into full-scale war across the continent and beyond. Other events listed happen either after the war had already begun or aren’t accurate triggers for the 1914 outbreak. For example, Germany’s invasion of Belgium occurred as part of early war maneuvers rather than the initial spark, the Lusitania sinking happened in 1915, and the Poland monarch scenario doesn’t fit the historical sequence of the period.

The essential idea is that a single act of violence provided the immediate spark that set off a chain reaction among Europe’s tangled alliances. The assassination of Archduke Franz Ferdinand, the heir to Austria-Hungary, by a Bosnian Serb nationalist in 1914 created a crisis that Austria-Hungary moved to punish Serbia for. Because Europe was locked into a web of alliances and mobilization plans, this localized shock quickly pulled in Russia, Germany, France, and Britain, and the result was a rapid slide into full-scale war across the continent and beyond.

Other events listed happen either after the war had already begun or aren’t accurate triggers for the 1914 outbreak. For example, Germany’s invasion of Belgium occurred as part of early war maneuvers rather than the initial spark, the Lusitania sinking happened in 1915, and the Poland monarch scenario doesn’t fit the historical sequence of the period.