SEAB Original-style practice: Explain how the alliance system made a major war in Europe more likely by 1914.

**Point of view.** The alliance system turned a local quarrel into a continental war by dividing Europe into two armed camps that were pledged to support each other. **Reason 1 (two camps).** By 1907 Europe was split into the Triple Alliance (Germany, Austria-Hungary, Italy) and the Triple Entente (France, Russia, Britain). A dispute between any two members risked dragging in the rest. **Reason 2 (chain reaction).** Because allies promised military support, a quarrel between Austria-Hungary and Russia could pull in Germany, then France, then Britain, like a row of falling dominoes. **Reason 3 (less room to back down).** Leaders feared looking weak to their allies, so they were less willing to compromise in a crisis. **Conclusion.** The alliances did not start the war on their own, but they made sure that once one pair of powers fought, the whole of Europe would be drawn in. What markers reward: a clear point of view, the two named blocs, the chain-reaction idea explained rather than just stated, and a short judgement.

SingaporeHistorySyllabus dot point

How did the system of alliances and the arms race make a major war between the European powers more likely?

Explain how the alliance system and the naval and military arms race increased tension and made the outbreak of war more likely by 1914

A clear N(A)-Level answer on how the two armed camps in Europe and the naval and military arms race raised tension before 1914. The two alliance blocs, the Anglo-German naval race, war plans, and how to weigh this as a long-term cause.

Generated by Claude Opus 4.89 min answerUpdated 2026-06-06

Reviewed by: AI editorial process; not yet individually human-reviewed

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What this dot point is asking
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What this dot point is asking

This dot point asks you to explain how two long-term causes, the alliance system and the arms race, raised tension in Europe and made a major war more likely by 1914. You are not being asked what started the war on the exact day it broke out. You are being asked why Europe was so dangerous and so ready to fight in the years before. The key idea is that alliances and weapons did not by themselves cause the war, but they created a situation in which a single crisis could explode into a continental conflict.

The answer

Europe divided into two armed camps

By 1907 the great powers of Europe had split into two opposing groups. On one side stood the Triple Alliance of Germany, Austria-Hungary and Italy. On the other stood the Triple Entente of France, Russia and Britain. These were agreements in which countries promised to support each other if one of them was attacked. The result was that Europe was no longer a collection of separate states that could settle quarrels one by one. It was two blocs facing each other, each watching the other with suspicion.

How alliances could cause a chain reaction

The danger of the alliance system was that it could turn a small, local quarrel into a war involving everyone. Imagine a dispute between Austria-Hungary and Russia. Russia's ally France might be drawn in, and Austria-Hungary's ally Germany might be drawn in, and once Germany and France were at war, Britain might join too. This is the idea of a chain reaction, sometimes called the domino effect: one country falls into war and knocks the next into war after it. The alliances meant that a fire lit in one corner of Europe could spread across the whole continent.

Alliances made backing down harder

Alliances also changed how leaders behaved in a crisis. A leader who gave way and compromised risked looking weak in front of their allies, and might fear that their allies would no longer trust or support them. So instead of cooling a crisis down, the alliance system gave leaders a reason to stand firm and to support their partners even when compromise would have been wiser. This made it more likely that a crisis would end in war rather than in a peaceful settlement.

The arms race: armies and the naval race

At the same time the powers were building up their armed forces, a process called the arms race. On land, the major countries expanded their armies and trained millions of men so they could be called up quickly. At sea, Britain and Germany competed to build the largest and most powerful navy. Britain had long had the strongest fleet in the world, and felt threatened when Germany began to build a large modern navy, including powerful new battleships called dreadnoughts. This Anglo-German naval race created deep distrust between the two countries and pushed Britain closer to France and Russia.

War plans made armies hard to stop

The arms race also produced detailed war plans. The most famous was Germany's plan to defeat France quickly in the west before turning to face Russia in the east. These plans depended on moving huge armies by railway on a fixed timetable. Once the order to mobilise was given, it was very hard to stop the machine without falling behind the enemy. This meant that in a crisis, the pressure to act first and act fast made war even more likely.

Worked example

Question: Explain how the arms race made war between the European powers more likely by 1914. Build one strong paragraph.

Step 1: Make a clear point

Begin with a sentence that answers the question directly: "The arms race made war more likely because it created fear and distrust between the powers and gave each side the means to fight a large war quickly."

Step 2: Give a specific example

Name a real example as evidence: "The clearest example was the naval race between Britain and Germany. Germany built a large modern fleet, including dreadnought battleships, which alarmed Britain because Britain had always relied on having the strongest navy."

Step 3: Explain how this links to war

Show how the example answers the question: "This race made Britain see Germany as a threat and pushed Britain closer to France and Russia. The build-up of armies on the continent meant that, once a crisis came, millions of trained men could be sent to fight almost at once."

Step 4: Finish with a judgement

End by weighing it: "The arms race did not start the war, but it deepened the suspicion between the powers and meant that when war came it would be huge, so it made a major war far more likely."

Examples in context

Example 1. The two camps in a crisis. Earlier crises before 1914, such as disputes over Morocco, had already shown how the two blocs lined up against each other, with Britain and France supporting one another against Germany. Each crisis hardened the divisions and made the powers see the world as two hostile teams, so by 1914 the habit of taking sides was firmly set.

Example 2. The dreadnought race. When Britain launched the powerful new battleship HMS Dreadnought, it made all earlier warships seem out of date. Germany responded by building its own dreadnoughts, and Britain answered by building even more. This open competition, played out in newspapers and parliaments, made ordinary people in both countries see the other as a dangerous rival, which is exactly the kind of distrust that helped cause the war.

Try this

Cue. Name the two alliance blocs of 1914 and the three members of each, then explain in one sentence why having two opposed camps was dangerous.
Cue. Explain the chain-reaction or domino idea: how a quarrel between Austria-Hungary and Russia could pull in Germany, France and finally Britain.
Cue. Describe the Anglo-German naval race, name the dreadnought battleship, and explain how it created distrust between Britain and Germany.

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.

Original8 marksExplain how the alliance system made a major war in Europe more likely by 1914.

Show worked answer →

Point of view: The alliance system turned a local quarrel into a continental war by dividing Europe into two armed camps that were pledged to support each other.
Reason 1 (two camps): By 1907 Europe was split into the Triple Alliance (Germany, Austria-Hungary, Italy) and the Triple Entente (France, Russia, Britain). A dispute between any two members risked dragging in the rest.
Reason 2 (chain reaction): Because allies promised military support, a quarrel between Austria-Hungary and Russia could pull in Germany, then France, then Britain, like a row of falling dominoes.
Reason 3 (less room to back down): Leaders feared looking weak to their allies, so they were less willing to compromise in a crisis.
Conclusion: The alliances did not start the war on their own, but they made sure that once one pair of powers fought, the whole of Europe would be drawn in.

What markers reward: a clear point of view, the two named blocs, the chain-reaction idea explained rather than just stated, and a short judgement.

Original7 marksStudy the source. A British newspaper cartoon from about 1909 shows two large warships, one flying the German flag and one the British flag, racing side by side while their captains glare at each other. What does this source suggest about relations between Britain and Germany before 1914? Support your answer with details from the source.