Definition and Scope: World War I was a global conflict involving 135 countries, resulting in over 15 million deaths. It began in August 1914 and concluded in 1918.
Direct Trigger: The assassination of Austrian Archduke Franz Ferdinand and his wife by Gavrilo Princip on June 28, 1914, directly triggered the war.
Actual Causes (Underlying Factors):
- System of Alliances: Agreements between countries for mutual support created two antagonistic power blocs in Europe:
- Triple Alliance: Germany, Austria-Hungary (joined 1879), and Italy (joined 1882). By the war's end, this expanded to the Central Powers including Bulgaria and Turkey.
- Triple Entente: France and Russia (1894), later joined by Great Britain (1907). This was a military alliance driven by treaties and fears of growing German power, later generally referred to as the Allies, including Italy and Japan. This system fostered fear and suspicion, transforming local disputes into general conflict.
- Imperialism: Countries taking over new lands for rule. By 1900, Britain and France held vast territories, increasing rivalry with Germany, which entered the colonial scramble late. This scramble for raw materials and markets due to industrialization led to clashes of imperial interests.
- Economic Rivalry: Marxism suggested capitalism would inevitably lead to war through economic rivalry. Industrialized European powers sought to expand territory for raw materials and markets, leading to conflict.
- Militarism: Governments giving high profile to the army and military forces. A growing European divide led to an arms race, with French and German armies doubling between 1870 and 1914. Britain and Germany competed for naval mastery, exemplified by Britain's 1906 introduction of the 'Dreadnought' battleship, which Germany soon replicated. Germany's Von Schlieffen Plan involved attacking France through Belgium if Russia mobilized against Germany.
- Nationalism: Strong support for one's country's rights and interests. The Congress of Vienna (after Napoleon's exile) left Germany and Italy divided, fueling nationalist movements for re-unification (Italy 1861, Germany 1871). France was angered by the loss of Alsace-Lorraine to Germany after the Franco-Prussian War. Austria-Hungary and Serbia contained various nationalist groups seeking independence.
- Moroccan Crises (1904, 1911): Britain gave Morocco to France in 1904. Germany supported Moroccan independence in 1905, nearly causing war, resolved by the Algeciras Conference (1906) which affirmed French possession and strengthened Anglo-French ties. In 1911, Germany again protested French possession (Agadir Crisis), with Britain supporting France, and Germany backing down for part of French Congo. This indicated Germany's fragile relations with France and reinforced a belief that Germany sought to dominate Europe.
- Bosnian Crisis (1908): Austria-Hungary annexed Bosnia, angering Serbia, which felt the province should be theirs. Russia (allied with Serbia) and Germany (allied with Austria-Hungary) mobilized, but Russia backed down, avoiding war. Subsequent Balkan wars (1911-1912) and Austrian intervention against Serbian acquisitions heightened tension.
- Assassination of Archduke Franz Ferdinand (1914): The Black Hand, a Serb nationalist secret society, assassinated Franz Ferdinand and Sophie in Sarajevo. This brought Austro-Serbian tensions to a head, leading to declarations of war within 30 days.
Course of the War:
Fought across Europe, Africa, and Asia, both on land and sea.
European Fronts:
- Western Front: Most fighting between Germany and the Allies took place in Belgium and France, as per the Schlieffen Plan. The Schlieffen Plan was designed for a quick attack on France via neutral Belgium (taking six weeks) while Russia mobilized, followed by a move of troops to the Russian front. However, it assumed Russia would need six weeks to mobilize (she mobilized faster) and Germany would defeat France in less than six weeks, both of which were weaknesses.
- Germany invaded Belgium on August 4, 1914, leading Britain to declare war. The Belgian resistance at Liège delayed German plans.
- Christmas Truce (1914): A temporary halt in fighting on parts of the Western Front, initiated by Germans, with exchanges of gifts and visits across lines.
- By 1915, the Western Front became a stalemate characterized by trench warfare (from Switzerland to the North Sea), barbed wire, mines in "no man's land," and the use of gas. Attempts to break the stalemate led to massive casualties, such as 60,000 British deaths in one day at the Battle of the Somme (1916).
- Battle of Verdun (1916): German assault on Verdun, lasting from February to December 1916, was one of the longest and bloodiest attrition battles, causing immense French and German casualties.
- Eastern Front: Fought in Central and Eastern Europe. Russia was attacked by Germany on August 1, 1914, and by Austria-Hungary on August 6. Russians were decisively defeated by Austro-German forces at the Battles of Tannenberg and Masurian Lakes in August and September 1914.
War in the Seas:
Fierce naval battles, like in May 1916, where British intelligence decoded German wireless code to counter their fleet in the North Sea, resulting in significant ship losses on both sides.
Importance of Britain's Naval Supremacy:
- Blocked Central Powers (especially Germany) from accessing food and raw materials, derailing their war plans.
- Enabled Allies to capture Central Powers' colonies.
- Maintained uninterrupted communication for Allies and safeguarded British supplies.
End of World War I:
- Final Phase: A second German onslaught on France in 1918, where German forces were decisively defeated by USA soldiers.
- Two Key Events Leading to End:
- Russia's withdrawal from the war after the Great Russian Revolution. The 1917 revolution led to war weariness, poverty, and hunger. The Bolsheviks under Vladimir Lenin signed the Treaty of Brest-Litovsk with the Central Powers in March 1918, ending fighting and giving Germany land in Eastern Europe.
- USA's declaration of war against the Central Powers.
- Reasons for USA Entry: German U-boat attacks on American ships (like Lusitania) carrying food and weapons to Britain, which killed Americans. The Zimmerman Telegram (Germany's secret proposal to Mexico for an alliance against the USA). Concerns about safeguarding trade with Britain and potential financial/industrial losses if Allied powers were defeated. Links between German sympathizers and industrial sabotage in the USA. Growing anti-German sentiment due to German "cruelty" and Allied sympathizers having relatives in France or Britain. The USA declared war on Germany on April 6, 1917, joining the Allies.
- Armistice: Germany declared a republic and negotiated with Allied Supreme Commander Ferdinand Foch. Harsh terms were given to Germany: withdrawal from occupied territories (including colonies), withdrawal of forces west of the Rhine, surrender of warships, Allied occupation of parts of Germany, and release of Allied POWs. Germany signed the armistice on November 9, 1918, at 11:00 AM.
Reasons for Allied Victory:
- Many supporters from 25 states (Britain, France, Belgium, Russia, Italy, USA, Japan, Portugal), providing more manpower.
- Germany's failure to control expensive colonies, some of which turned against her.
- USA's entry accelerated the defeat of Central Powers due to its industrial and economic might.
- Able and focused political leaders like Lloyd George (British PM) and Georges Clemenceau (French PM).
- German technical mistakes, such as the invasion of neutral Belgium, turned world opinion against the Central Powers.
- Superior naval power of the Allies (British Royal Navy) enabled a naval blockade, causing severe food shortages for Central Powers.
- Germany fought on many fronts.
- Germany was let down by allies like Italy (who decamped) and Bulgaria/Austria-Hungary (who needed constant assistance). Turkey easily accepted defeat.
- Allies had superior financial and industrial resources in Europe and their colonies.
- Allies possessed powerful weapons (Tankers, Aircraft, Battleships).
- Allies were united under General Foch, disadvantaging Central Powers. Germany used young, inexperienced soldiers late in the war due to heavy casualties.
- Central Powers were geographically surrounded and easily blockaded due to lack of extensive coastline.
Peace Treaties:
- Woodrow Wilson's Fourteen Points (January 1918): Outlined principles for world peace, including:
- Self-determination of all peoples.
- Public disclosure of diplomatic and international agreements.
- Establishment of a League of Nations to discuss international problems and protect small states from aggression.
- Paris Peace Conference (January 1919): Statesmen from 27 Allied powers converged. Central Powers were not involved in discussions but had to sign the final drafts. Key personalities: Lloyd George (Britain), George Clemenceau (France), Woodrow Wilson (USA), Vittorio Orlando (Italy).
Five Treaties Signed:
- Treaty of Versailles with Germany (June 28, 1919).
- Treaty of St. Germaine with Austria (September 10, 1919).
- Treaty of Neuilly with Bulgaria (November 27, 1919).
- Treaty of Trianon with Hungary (June 4, 1920).
- Treaties of Sevres (1920) and Lausanne (1923) with Turkey.
Terms of the Treaty of Versailles (1919) (often used generally for all treaties):
- Germany declared an aggressor, obligated to pay reparations, and her military capability reduced.
- Germany lost all colonial possessions, placed under League of Nations supervision.
- Treaty of St. Germaine created Yugoslavia, Bosnia, Herzegovina, and Malta as mandated territories.
- Germany was disarmed, allowed only 100,000 soldiers, navy disbanded, and military conscription banned.
- Germany's population and size reduced; Austria (with large German population) remained independent. Italy gained Stria.
- Rhineland to be permanently demilitarized.
- Germany lost Alsace and Lorraine to France.
- Established the League of Nations.
Failures of the Treaty of Versailles:
- Heavy punishment on Germany, causing deep resentment and bitterness.
- Ignored interests of colonial peoples (German and Turkish possessions handed to France and Britain).
- Failed to cater for minority interests in Europe (e.g., Austria forbidden from merging with Germany despite a national vote for it).
- Italy received a "raw deal" (only Stria).
- USA (President Wilson's idea for League of Nations) did not join due to constitutional prohibition on commitment to such an organization, denying the League diplomatic and economic strength.
Results of World War I:
- Growth of nationalist movements and patriotism in Asia and Africa.
- USA gained upper hand in post-war European affairs, emerging as a leading world power.
- German military capability reduced; heavy indemnity imposed; lost all colonies.
- Beginning of decline of Western imperialism; encouragement for imperial powers to grant more freedom to subjects.
- Creation of new states (Yugoslavia, Czechoslovakia, Poland, Finland).
- Germany and Italy fell to dictators (Mussolini, Hitler), contributing to WWII.
- Created bitter feelings and mistrust, continuing until WWII.
- Led to the Bolshevik Revolution in Russia (1917).
- Change of government in Britain.
- Greater use of motor vehicles and aircraft, improving transport.
- Improvement in surgery.
- Destruction of European factories, businesses, property, and infrastructure (1914-1918).
- Led to the Great Depression (1920-1921), affecting economies worldwide.
- Increased taxation by colonial authorities to meet war and post-war demands.