How did the assassination at Sarajevo turn into a general European war within five weeks?
Explain how the assassination of Archduke Franz Ferdinand led, through the July Crisis, to the outbreak of a general war in 1914
A focused answer to the O-Level History dot point on the July Crisis of 1914. The Sarajevo assassination, the Austrian ultimatum to Serbia, the blank cheque, the chain of mobilisation, and how the crisis became a general war.
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What this dot point is asking
SEAB wants you to explain how the assassination of Archduke Franz Ferdinand on 28 June 1914 set off the "July Crisis", a five-week chain of decisions that ended in a general European war. You should be able to describe the key steps in order, from the assassination through the Austrian ultimatum and the German blank cheque to the cascade of mobilisations and declarations of war. You should also be able to explain why each step led so quickly to the next, linking the crisis back to the deeper causes (alliances, militarism and Balkan tension) that made the spark so dangerous.
The answer
The spark: the assassination at Sarajevo
On 28 June 1914, Archduke Franz Ferdinand, the heir to the throne of Austria-Hungary, visited Sarajevo in Bosnia. He and his wife were shot dead by Gavrilo Princip, a young Bosnian Serb linked to a Serbian nationalist group that wanted to free the South Slavs from Austrian rule. The assassination shocked Europe, but on its own an assassination need not have caused a world war. What turned it into one was the way the great powers responded over the following weeks.
Austria-Hungary's response and the blank cheque
Austria-Hungary blamed Serbia and saw a chance to crush Serbian nationalism for good. Before acting, it asked Germany for support. Germany gave Austria-Hungary a promise of full backing, whatever it decided to do. This promise is known as the "blank cheque", because it was like signing a cheque and leaving the amount blank. Encouraged, Austria-Hungary sent Serbia a deliberately harsh ultimatum (a list of demands) in late July, designed to be almost impossible to accept fully. Serbia agreed to most of the demands but not all. Austria-Hungary used this as the excuse to declare war on Serbia on 28 July 1914.
The chain of mobilisation
Once Austria-Hungary attacked Serbia, the alliance system pulled in the other powers, step by step:
- Russia had promised to protect Serbia and began to mobilise its huge army.
- Germany, allied to Austria-Hungary and alarmed by Russian mobilisation, declared war on Russia on 1 August.
- Because of the Schlieffen Plan, Germany also declared war on Russia's ally France on 3 August, intending to defeat France quickly before turning east.
- To attack France, Germany invaded neutral Belgium. Britain had promised to defend Belgian neutrality, so on 4 August Britain declared war on Germany.
In just over a week, a quarrel between Austria-Hungary and Serbia had become a war involving all the great powers of Europe.
Why the crisis spun out of control
The crisis became a war so quickly for several linked reasons. The alliance system meant each power was bound to support its partners, so the conflict spread automatically. Militarism and rigid war plans meant that once one country mobilised, others felt they had to mobilise at once or fall behind, so there was little time for diplomacy. The deeper Balkan tensions meant Austria-Hungary and Russia were already determined not to back down. And the blank cheque emboldened Austria-Hungary to take a hard line. The assassination was the spark, but it landed on a continent already primed to explode.
Examples in context
Example 1. The ultimatum designed to be rejected. The Austrian ultimatum to Serbia was so harsh that Austria-Hungary expected Serbia to refuse it, giving an excuse for war. In fact Serbia accepted nearly all of the demands, which made Austria-Hungary's declaration of war look aggressive to many onlookers. This shows that Austria-Hungary wanted a war with Serbia, and that the crisis was driven by deliberate choices, not just accident.
Example 2. The Schlieffen Plan turns a Russian quarrel into a war with France. Germany's only war plan assumed a two-front war and required defeating France first. So when the crisis was really about Russia and the Balkans, Germany still attacked France and Belgium. This is a powerful example of how rigid military planning (militarism) widened the war far beyond the original quarrel and brought Britain in.
Try this
Q1. What is meant by the "blank cheque" of 1914? [3 marks]
- Cue. Germany's promise of full support to Austria-Hungary, whatever it decided to do about Serbia, which encouraged Austria-Hungary to take a hard line.
Q2. Explain why Britain declared war on Germany in August 1914. [6 marks]
- Cue. Germany invaded neutral Belgium under the Schlieffen Plan; Britain had promised in 1839 to defend Belgian neutrality and also feared a Germany that dominated Europe, so it declared war on 4 August.
Q3. "The assassination at Sarajevo was the real cause of the First World War." How far do you agree? [13 marks]
- Cue. Argue the assassination was only the spark; the deeper causes (alliances, militarism, imperial and Balkan rivalry) made the crisis explode. Judge how far the spark mattered against the underlying causes.
Exam-style practice questions
Practice questions written in the style of SEAB exam questions on this dot point, with worked answer explainers. The year tag is the paper they imitate, not the source.
Original6 marksDescribe the events of the July Crisis from the assassination at Sarajevo to the outbreak of war.Show worked answer →
Aim for a clear, ordered account of the key steps with dates.
- Point
- The July Crisis was the chain of events in the summer of 1914 that turned an assassination into a general war within five weeks.
- Evidence (the sequence)
- On 28 June 1914 Archduke Franz Ferdinand, heir to the Austrian throne, was assassinated in Sarajevo by a Bosnian Serb. Backed by Germany's "blank cheque", Austria-Hungary sent Serbia a harsh ultimatum in late July. When Serbia did not accept every demand, Austria-Hungary declared war on Serbia on 28 July. Russia mobilised to protect Serbia; Germany declared war on Russia (1 August) and France (3 August), and invaded Belgium; Britain declared war on Germany on 4 August.
- Explanation
- Each step followed quickly because of alliance commitments and rigid mobilisation timetables.
Markers reward an accurate sequence with key dates, naming the ultimatum and the blank cheque, and a sentence showing why each step led to the next.
Original13 marksA source-based question presents two sources on responsibility for the war. Source A is a post-war German statement arguing that Germany was forced into war by Russia's early mobilisation, which left Germany no choice but to defend itself. Source B is a statement by an Allied writer arguing that Germany's blank cheque to Austria-Hungary and its invasion of neutral Belgium prove German aggression. Using both sources and your own knowledge, how far do you agree that Germany was responsible for the outbreak of war in 1914?Show worked answer →
Approach: weigh what each source claims, use provenance, bring in own knowledge, then judge how far you agree.
- Source A view
- Germany was a victim, forced to act by Russian mobilisation; this defends Germany.
- Source B view
- Germany was the aggressor because of the blank cheque and the invasion of Belgium; this blames Germany.
- Provenance
- Source A is a German statement made after the war, so it has a clear motive to shift blame and reduce Germany's guilt. Source B is from an Allied writer, who also has a motive: to justify the Allied cause and the peace terms. Both are one-sided.
- Own knowledge
- Germany did give Austria-Hungary the blank cheque, encouraging a hard line, and did invade neutral Belgium under the Schlieffen Plan, which brought Britain in. But Russia did mobilise early, and the deeper causes (alliances, militarism, Balkan tension) involved every great power.
- Judgement
- I agree to a fair extent that Germany bears heavy responsibility (the blank cheque and Belgium were decisive choices), but it was not solely responsible, because the wider system of alliances and rivalries made many powers culpable.
Markers reward using both sources, weighing provenance, supporting with own knowledge, and a clear judgement on "how far".
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