WWI: Causes
FoundationWWI (1914–1918) is explained by the acronym M.A.I.N.: Militarism, Alliances, Imperialism and Nationalism — triggered by the assassination at Sarajevo in 1914.
- M.A.I.N.: Militarism, Alliances, Imperialism, Nationalism
- Sarajevo = the spark, not the whole cause
- Alliances auto-escalated the conflict
§Text Passage
1In the late nineteenth century, tension among the European powers accumulated on four fronts at once. Militarily, the great powers embraced militarism and expanded their forces on a massive scale: Germany's new fleet directly challenged British naval supremacy, Britain answered with dreadnoughts, and conscription swelled every standing army. The more weapons each state stockpiled, the deeper the suspicion grew, and each government accelerated its preparations in the belief that war was coming.
2Diplomatically, the powers concluded a web of military treaties that split Europe into two armed camps: in 1882 Germany, Austria-Hungary and Italy formed the Triple Alliance, while Britain, France and Russia countered with the Triple Entente. Members pledged mutual support in war, so any quarrel with one member risked dragging in all the rest, and a local conflict could escalate into a continent-wide war.
3Economic and national rivalries ran just as deep. Germany, unified late, possessed far fewer colonies than Britain or France and demanded a redivision of the world, twice clashing with France over Morocco; the Balkans, home to many peoples, was known as the powder keg of Europe, and Serbia's campaign for South Slav unity threatened directly the multi-ethnic rule of Austria-Hungary.
4On 28 June 1914 Archduke Franz Ferdinand, heir to the Austro-Hungarian throne, was shot dead in Sarajevo by the Serbian youth Gavrilo Princip. Austria-Hungary declared war on Serbia in late July; Russia mobilised in support of Serbia, Germany backed Austria and declared war on Russia and then France, and its invasion of Belgium brought Britain in. Under the chain reaction of the alliances, a regional assassination became a world war within a month.
1Summary 重點摘要
WWI (1914–1918) is explained by the acronym M.A.I.N.: Militarism, Alliances, Imperialism and Nationalism — triggered by the assassination at Sarajevo in 1914.
2Vocabulary cards Vocabulary
Nations racing to build up armies and navies.
Triple Alliance (Germany/Austria/Italy) vs Triple Entente (Britain/France/Russia) — one war pulls in all.
Extreme patriotism + demands for self-rule, especially in the Balkans.
The 1914 assassination of the Austrian heir by a Serbian nationalist — the spark.
The powers' scramble for colonies, markets and spheres of influence; Africa and the Balkans were the flashpoints.
The military bloc of Germany, Austria-Hungary and Italy (1882).
The opposing grouping of Britain, France and Russia, facing the Triple Alliance.
A nickname for the Balkans, where ethnic tensions and great-power rivalry made war ever-ready.
3Step by step Steps
- M — MilitarismIn the late nineteenth century the European powers treated military strength as the pillar of national security and embraced militarism, expanding their armed forces on a massive scale. Germany built up a fleet that directly challenged British naval supremacy; Britain answered with dreadnoughts, and the two launched a fierce naval race. On land, conscription enlarged standing armies and reserves everywhere. The more weapons each state stockpiled, the deeper the mutual suspicion grew: convinced that war was coming, every government accelerated its preparations, and the risk of war by accident kept climbing — a major long-term cause of the conflict.
- A — AlliancesSeeking security and hoping to check their rivals, the powers concluded a web of military treaties: in 1882 Germany, Austria-Hungary and Italy formed the Triple Alliance, while Britain, France and Russia countered with the Triple Entente. Europe thus split into two armed camps whose members pledged mutual support in war; whenever one member fought another state, its allies were automatically drawn in under the treaties. A conflict that began as a local quarrel could therefore escalate into a continent-wide war, and the alliance system, meant to preserve the balance of power, became a channel through which war spread.
- I — ImperialismIn the late nineteenth century the European powers expanded overseas, competing for colonies and spheres of influence in Africa and Asia, and their clashes never ceased. Germany, unified late, possessed far fewer colonies than Britain or France and demanded a redivision of the world — its 'place in the sun'. In the early twentieth century Germany and France twice came close to war over Morocco, and the powers also jostled for influence in the Balkans, making the region even more volatile. These long-standing imperial grudges deepened mutual hostility and laid the groundwork for war.
- N — NationalismThe Balkan Peninsula contained many peoples and was known as 'the powder keg of Europe'. Serbia championed the unity of the South Slav peoples and urged them to form a single South Slav state, a direct threat to the rule of multi-ethnic Austria-Hungary, which came to regard Serbia as a mortal danger. Elsewhere, France remained deeply resentful of Germany over Alsace-Lorraine. Nationalist feeling ran high across Europe, and public opinion pressed governments to stand firm, leaving them little room to settle disputes through compromise; the soil for war grew ever richer.
- The sparkOn 28 June 1914 Archduke Franz Ferdinand, heir to the Austro-Hungarian throne, and his wife were shot dead while visiting Sarajevo, the capital of Bosnia, by Gavrilo Princip, a young Serbian nationalist. Austria-Hungary held Serbian official circles responsible and declared war in late July. Russia mobilised in support of Serbia; Germany backed Austria-Hungary, declared war on Russia and then France, and its invasion of Belgium brought Britain in as well. Under the chain reaction of the alliances, a regional assassination turned into a European, then world, war within a single month.
- The arms race and mobilisation plansAnxiety about war pushed the arms race to new heights. Germany's naval expansion challenged Britain's 'two-power standard', and the two countries competed to build dreadnoughts at enormous cost; on the Continent, standing armies and reserves multiplied. At the same time, the general staffs drew up mobilisation plans that were chained together: once one state ordered mobilisation, its neighbours had to follow at once for fear of being caught unprepared, and the war machine, once set in motion, was almost impossible to halt. Arms and timetables reinforced each other, making peace ever harder to keep.
4Diagrams Diagrams
5Worked example Example
Why did one regional assassination become a world war?
- Sarajevo was just a spark
- But the powder was long stacked: militarism, alliances, imperialism, nationalism
- Alliance treaties auto-triggered: Russia backed Serbia, Germany backed Austria, Britain/France drawn in
- Result: local clash → all Europe → world war
- Answer: The Sarajevo assassination became a world war because the four M.A.I.N. tensions had long been building: the arms race put everyone on edge, the alliance system auto-escalated any clash, and imperial rivalry and nationalism stocked the kindling everywhere. After the shooting, Russia mobilised for Serbia, Germany backed Austria, and Britain and France followed — within a month a regional murder had engulfed Europe. The killing was only the trigger; the real long-term causes were the four tensions. Distinguish long-term from short-term causes in your answer.
6Common mistakes Mistakes
7Quick check Quick check
Q1What do the four letters of M.A.I.N. stand for?
Q2What was the immediate trigger of WWI?
Q3Why were the Balkans called the 'powder keg of Europe'?
Q4Which three countries formed the Triple Entente?
Q5What did the Moroccan Crises show?
8Recap Recap
- M.A.I.N.: Militarism, Alliances, Imperialism, Nationalism
- Sarajevo = the spark, not the whole cause
- Alliances auto-escalated the conflict
- The Anglo-German naval race + conscription deepened mutual suspicion
- The Balkans = powder keg of Europe; Serbian nationalism directly threatened Austria-Hungary