Six Causes of World War I (2024)

The First World War began in the summer of 1914, shortly after the assassination of Austria’s Archduke, Franz Ferdinand, and lasted more than four years, ending in 1918. The Great War left more than 20 million soldiers dead and 21 million more wounded, which can be attributed to trench warfare and the number of countries involved in the war. For aspiring historians, understanding the causes of World War I are equally as important as understanding the conflict’s devastating effects. Though the assassination of Archduke Ferdinand was the direct precipitating event leading to the declaration of war, there were many other factors that also played a role in leading up to World War I (WWI).

European Expansionism

In the 1900s, several European nations had empires across the globe, where they had control over vast swaths of lands. Prior to World War I, the British and French Empires were the world’s most powerful, colonizing regions like India, modern-day Vietnam and West and North Africa. The expansion of European nations as empires (also known as imperialism) can be seen as a key cause of World War I, because as countries like Britain and France expanded their empires, it resulted in increased tensions among European countries. The tensions were a result of many colonies often being acquired through coercion. Then, once a nation had been conquered, it was governed by the imperial nation: many of these colonial nations were exploited by their mother countries, and dissatisfaction and resentment was commonplace. As British and French expansionism continued, tensions rose between opposing empires, including Germany, Austria-Hungary and the Ottoman Empire, leading to the creation of the Allied Powers (Britain and France) and Central Powers (Germany, Austria-Hungary and the Ottoman Empire) during World War I.

Serbian Nationalism

Nationalism was one of many political forces at play in the time leading up to World War I, with Serbian nationalism in particular, playing a key role. Serbian nationalism can be dated to the mid- and late-1800s, though two precipitating nationalism events are directly linked to the start of WWI. In the Balkans, Slavic Serbs sought independence from Austria-Hungary and the Ottoman Empire, and in 1878, they tried to gain control of Bosnia and Herzegovina to form a unified Serbian state. With the decline of the Ottoman Empire, Serbian nationalism continued to rise, culminating in the assassination of the Archduke of Austria in 1914 by a Bosnian Serb and officially triggering the start of the Great War.

The Assassination of Franz Ferdinand

On June 28, 1914, the Archduke Franz Ferdinand of Austria was assassinated by Gavrilo Princip. Ferdinand was chosen as a target because he was to be the heir of the Austro-Hungarian Empire. On the day of his assassination, the Archduke traveled to Sarajevo to inspect imperial armed forces in Bosnia and Herzegovina, former Ottoman territories acquired by Austria-Hungary in 1908. While Ferdinand was traveling in an open car in Sarajevo, Princip fired into the car, shooting Ferdinand and his wife Sophie. Following the assassination, Austria-Hungary issued an ultimatum to Serbia, which was rejected and led Austria-Hungary to declare war against Serbia, with German support. Russia then came to Serbia’s defense, therefore initiating the First World War.

Conflicts over Alliances

In the age of imperialism prior to World War I, countries throughout Europe had created alliances. The alliances promised that each country would support the other if war ever broke out between an ally and another Great Power. Prior to WWI, the alliances of Russia and Serbia; France and Russia; Germany, Italy and Austria-Hungary; Britain, France and Belgium; France, Britain and Russia; and Japan and Britain were firmly in place. The alliance, between France, Britain and Russia, formed in 1907 and called the Triple Entente, caused the most friction among nations. Germany felt that this alliance surrounding them was a threat to their power and existence. As tensions continued to rise over alliances, the preexisting alliances fed into other countries declaring war against one another in the face of conflict. These conflicts over alliances — which forced nations to come to the defense of one another — led to the formation of the two sides of World War I, the Allied and Central Powers. By the start of the war, Italy and the United States entered on the side of the Allied Powers, which consisted of Russia, France and Great Britain. The Central Powers, alternately, consisted of Germany, Austria-Hungary, the Ottoman Empire and Bulgaria.

The Blank Check Assurance: Conspired Plans of Germany and Austria-Hungary

The alliance between Germany and Austria-Hungary at the start of World War I is also commonly known as the “blank check assurance.” In July 1914, during a meeting between members of the Austrian Foreign Ministry, the Ambassador to Berlin, the German Emperor and the German Chancellor, Germany offered Austria-Hungary unconditional support in the wake of the assassination of Franz Ferdinand. This “blank check,” via unconditional support, sought military and political triumph in securing the Balkans. It also gave Austro-Hungarian leaders the confidence needed to embark on war against Serbia. Today, historians regard it as one of the most controversial decisions in the history of modern warfare, particularly because Germany failed to withdraw the unconditional support when given the opportunity. It is also widely recognized as one of the main reasons Germany is seen as responsible for the escalation and continuation of World War I.

Germany Millenarianism – Spirit of 1914

Millenarianism is a belief held by a religious, political or social group or movement that a coming major transformation will occur, after which all things will be changed. For Germany, leading into World War I, historians report that the Spirit of 1914 was high, with support from the German population for participation in the war. The German government believed that the onset of war and its support of Austria-Hungary was a way to secure its place as a leading power, which was supported by public nationalism and further united it behind the monarchy. The success Germans saw in the opening battles of WWI provided a platform for the German government to position itself as able to accomplish more when unified and nationalistic. However, this millenarianism was short-lived, as Germany was unprepared to fight the long war, which took a dramatic and demoralizing toll on its people and later set the stage for the rise of the Third Reich, less than two decades later.

Following the events above, World War I moved into full force from 1914 through 1918, ending when peace was brokered between the German and Central Forces and the Allied Powers with the signing of the Treaty of Versailles. However, this treaty forced punitive measures on Germany that further destabilized Europe and laid the groundwork for the start of World War II. By understanding the causes of World War I, historians can develop a keen comprehension of how and why this devastating conflict began.

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Recommended Readings:
History of American Propaganda Posters
5 Key Cold War Events
Career Outlook: History Professor

Sources:

Outbreak of World War I, History

Imperialism as a Cause of World War I, Alpha History

World War I: A History, Google Books

The Spirit of 1914: Militarism, Myth, and Mobilization in Germany, Google Books

Germany's Blank Cheque to Austria-Hungary, International Encyclopedia

The European Powers in the First World War: An Encyclopedia, Google Books

Archduke Ferdinand Assassinated, History

Nationalism, International Encyclopedia

Imperialism, International Encyclopedia

German trenches on the Aisne, Library of Congress

Six Causes of World War I (2024)

FAQs

Six Causes of World War I? ›

The main causes of World War 1 were alliances between countries, militarism, nationalism, imperialism, secret diplomacy, and internationalism. The assassination of Archduke Franz Ferdinand, heir to the throne of Austria-Hungary, by Gavrilo Princip in Bosnia is widely accepted as the starting point for World War I.

What caused World War 1 answers? ›

The main causes of World War 1 were alliances between countries, militarism, nationalism, imperialism, secret diplomacy, and internationalism. The assassination of Archduke Franz Ferdinand, heir to the throne of Austria-Hungary, by Gavrilo Princip in Bosnia is widely accepted as the starting point for World War I.

What were the 7 causes of World War 1 in order? ›

Contents
  • 1 Immediate causes. 1.1 Assassination of Archduke Franz Ferdinand by Serbian nationalists, 28 June 1914. ...
  • 2 Polarization of Europe, 1887–1914. ...
  • 3 Domestic political factors. ...
  • 4 Imperialism. ...
  • 5 Social Darwinism.
  • 6 Arms race. ...
  • 7 Technical and military factors. ...
  • 8 Historiography.

What are the 5 causes of World War 1 quizlet? ›

  • Nationalism. Bosnians and Serbians were very nationalistic, and the Bosnians(Serbs that were living in Bosnia at the time) wanted to seperate from Austris-Hungary and join Serbia.
  • Militarism. Britain had a strong military, and navy. ...
  • Imperialism. ...
  • Alliances. ...
  • Assasination.

What was a cause of World War I responses? ›

The event that sparked the conflagration was the assassination of the heir to the Austro-Hungarian Empire, Archduke Franz Ferdinand, in 1914. But historians say that World War I actually was the culmination of a long series of events, stretching back to the late 1800s.

What are the 4 main causes of ww1 webquest answer key? ›

Militarism, alliances, imperialism and nationalism.

What was really the main cause of the WWI worksheet? ›

Assassination of Archduke Ferdinand

France, Great Britain, and Russia. Archduke assassinated by a Serbian terrorist group, the Black Hand, on June 28, 1914. Serbs thought that they might come under control of the Austro-Hungarian Empire. Austro-Hungarian Empire sent demands to Serbian government.

What are the main 5 causes of ww1? ›

This list is an overview of the most popular reasons that are cited as the root causes of World War 1.
  • Mutual Defense Alliances. Over time, countries throughout Europe made mutual. ...
  • Imperialism. ...
  • Militarism. ...
  • Nationalism. ...
  • Immediate Cause: Assassination of.

What triggered World War I? ›

The spark that set off World War I came on June 28, 1914, when a young Serbian patriot shot and killed Archduke Franz Ferdinand, the heir to the Austro-Hungarian Empire (Austria), in the city of Sarajevo. The assassin was a supporter of the Kingdom of Serbia, and within a month the Austrian army invaded Serbia.

What were the 7 effects of World War 1? ›

The First World War 1 Consequences shattered empires, birthed a slew of modern nations, sparked independence movements throughout Europe's colonies, drove the United States to become a global power, and paved the way for Soviet communism and Hitler's ascent.

What are the 5 causes of war? ›

War is caused by many different things, including competition over land, religious conflicts, and nationalism. Imperialism, racism, and slavery have also been causes of armed conflict.

What are the 4 main causes of World War 1 essay? ›

World war 1 was caused by four main reasons which are Militarism, Alliances, Imperialism, and Nationalism. Militarism was the best type of force to use in few of the European nations in years leading up to World War 1. Militarism affected not only the policy but the culture, media, and the opinion of the public.

What are the 4 long term causes of ww1? ›

Historians generally agree that the four main longterm causes of World War One were Militarism, Alliances, Imperialism and Nationalism.

What was the immediate cause of World War 1 explain? ›

The assassination of Archduke Franz Ferdinand was the immediate cause of a war between two great powers—Russia and the Habsburg Austro-Hungarian Empire.

What were the main causes of World War I choose four answers.? ›

The M-A-I-N acronym – militarism, alliances, imperialism and nationalism – is often used to analyse the war, and each of these reasons are cited to be the 4 main causes of World War One.

What was the cause of the WW1 for kids? ›

On June 28, 1914, Archduke Franz Ferdinand, the prince of Austria-Hungary, was assassinated by a secret society of Serbian and Bosnian people called the Black Hand. While this event sparked World War I, there were other factors that caused the war, including militarism, alliances, imperialism and nationalism.

What caused World War 1 to really start? ›

What was the main cause of World War I? World War I began after the assassination of Austrian archduke Franz Ferdinand by South Slav nationalist Gavrilo Princip on June 28, 1914.

What really caused WWII? ›

Adolf Hitler's invasion of Poland in September 1939 drove Great Britain and France to declare war on Germany, marking the beginning of World War II. Over the next six years, the conflict took more lives and destroyed more land and property around the globe than any previous war.

What was the origin of the World War 1? ›

The assassination of Archduke Franz Ferdinand, heir to the Austro-Hungarian throne, and his wife Sophie in the Bosnian capital, Sarajevo, on 28 June 1914 was a defining moment. This event was the culmination of a number of historical forces and processes that had been simmering in Europe for many years.

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