
On June 28, 1914, Archduke Franz Ferdinand of Austria and his wife, the Duchess of Hohenburg, were assassinated in Sarajevo, Bosnia. The assassin, Gavrilo Princip, was a Bosnian Serb nationalist. Austria-Hungary suspected Serbian government involvement and issued an ultimatum to Serbia on July 23, 1914, which included ten demands, such as suppressing anti-Austrian propaganda and allowing an Austro-Hungarian inquiry into the assassination. Serbia's defiance in response to the ultimatum led to Austria-Hungary declaring war on Serbia on July 28, 1914, marking the start of World War I.
| Characteristics | Values |
|---|---|
| Date of accusations | 23 July 1914 |
| Accusations | Serbia did nothing to prevent the formation of societies and groups against the Monarchy |
| Serbia was responsible for the assassination of Archduke Franz Ferdinand | |
| Demands | Condemnation of anti-Austrian propaganda |
| Collaboration between Austria-Hungary and Serbia to put a stop to subversive movements | |
| Serbia would accept an Austro-Hungarian inquiry into the assassination | |
| Serbia would suppress anti-Austrian propaganda | |
| Serbia would take steps to root out and eliminate terrorist organizations within its borders | |
| Response | Serbia accepted all terms except for the Austro-Hungarian participation in any internal inquiry |
| Outcome | Austria-Hungary breaks off diplomatic relations with Serbia |
| Austria-Hungary declares war on Serbia |
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What You'll Learn
- Serbia was accused of complicity in the assassination of Archduke Franz Ferdinand
- Austria-Hungary demanded Serbia condemn anti-monarchist propaganda
- Serbia was accused of not suppressing the Pan-Serbian movement
- Austria-Hungary accused Serbia of not cooperating with investigations
- Serbia was accused of not taking action against terrorist organisations

Serbia was accused of complicity in the assassination of Archduke Franz Ferdinand
The assassination of Archduke Franz Ferdinand of Austria and his wife, Sophie, the Duchess of Hohenburg, on June 28, 1914, served as the immediate catalyst for Austria-Hungary's accusations against Serbia and the subsequent ultimatum issued on July 23, 1914. The assassination, carried out by the Bosnian Serb nationalist Gavrilo Princip, ignited a chain of events that led to the outbreak of World War I.
Austria-Hungary accused Serbia of complicity in the assassination, suspecting that the Serbian government had either orchestrated the act or, at the very least, possessed knowledge of the plot. These suspicions were not unfounded, as Serbian officials had indeed been aware of the impending assassination. Initially, Serbian envoys to France and Russia, Milenko Vesnić and Miroslav Spalajković, respectively, claimed that Serbia had warned Austria-Hungary of the plot. However, Serbia later denied making such warnings and disavowed any knowledge of the assassination plans.
The Austro-Hungarian government demanded an inquiry into the involvement of Serbia and the Pan-Serbian movement in the assassination. They also sought to suppress anti-Austrian propaganda and demanded that Serbia take action against terrorist organizations within its borders, specifically the Black Hand, which was believed to have aided the assassins by providing weapons and safe passage. The ultimatum, presented by the Austro-Hungarian Minister at Belgrade, included ten harsh and provocative demands, effectively seeking to make Serbia a vassal of Austria-Hungary.
Serbia's response to the ultimatum was a critical moment. While Serbia accepted most of the terms, it refused to allow Austria-Hungary's participation in any internal inquiry, citing violations of its Constitution and criminal procedure laws. This defiance, coupled with the belief that Germany encouraged Austria-Hungary's aggressive stance, increased the likelihood of a conflict. Russia's partial mobilisation of its armed forces further emboldened Serbia and alarmed German leaders, who had not anticipated the potential of fighting Russia so early in the conflict.
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Austria-Hungary demanded Serbia condemn anti-monarchist propaganda
On June 28, 1914, Archduke Franz Ferdinand of Austria and his wife, the Duchess of Hohenburg, were assassinated in Sarajevo, Bosnia. The assassin, a Bosnian Serb nationalist named Gavrilo Princip, was arrested and held for trial. Although he was a Bosnian citizen, sentiment in Austria ran high against Serbia, which, it was claimed, was responsible for the deed. Within Serbia, there was popular rejoicing over the assassination.
Austria-Hungary accused Serbia of complicity in the killing of Franz Ferdinand, but they refused to release the results of their official inquiry, citing a lack of conclusive evidence. On July 23, 1914, Austria-Hungary issued an ultimatum to Serbia, demanding that the Serbian government accept an Austro-Hungarian inquiry into the assassination, suppress all anti-Austrian propaganda, and take steps to root out and eliminate terrorist organizations within its borders. The ultimatum was designed to provoke Serbia into defiance, providing Austria-Hungary with a pretext for war.
One of the specific accusations made by Austria-Hungary was that Serbia had failed to condemn anti-monarchist propaganda and had allowed societies and groups against the Monarchy to form. They demanded that Serbia condemn this propaganda and collaborate with Austro-Hungarian representatives to put a stop to the subversive movement. Serbia's response to the ultimatum effectively accepted all terms except for the demand to accept Austria-Hungary's participation in any internal inquiry, stating that this would violate their Constitution and criminal procedure laws.
Austria-Hungary's ultimatum to Serbia was part of a broader context of rising tensions in Europe, with Germany encouraging Austria-Hungary to take aggressive action against Serbia. The ultimatum ultimately led to the outbreak of World War I, as Serbia's refusal to meet all ten demands resulted in Austria declaring war on Serbia on July 28, 1914. This conflict quickly escalated, drawing in other powers and devastating Europe for the next four years.
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Serbia was accused of not suppressing the Pan-Serbian movement
On June 28, 1914, the heir to the Austro-Hungarian throne, Archduke Franz Ferdinand, and his wife, the Duchess of Hohenburg, were assassinated in Sarajevo, Bosnia. The assassin, a Bosnian student named Gavrilo Princip, was arrested and held for trial. Although he was not a Serbian national, feeling in Austria ran high against Serbia, which was accused of being responsible for the deed. Austria-Hungary believed that Serbia had, at the very least, permitted anti-Austrian intrigue to take place on its soil.
On July 23, 1914, Austria-Hungary presented the Serbian government with an ultimatum, a harsh and provocative document that sought to make Serbia a vassal state. The ultimatum included ten demands, the most significant of which were that Serbia accept an Austro-Hungarian inquiry into the assassination and suppress all anti-Austrian propaganda and terrorist organizations within its borders. One such organization, the Black Hand, was believed to have aided the assassins by providing weapons and safe passage. Serbia was given just 48 hours to respond.
Serbia's response, delivered by Prime Minister Nicola Pasic just before the deadline, accepted all terms of the ultimatum except one: it would not accept Austria-Hungary's participation in any internal inquiry, citing this as a violation of its Constitution and the law of criminal procedure. This response appealed to international observers, but to Vienna, it made little difference. Gieslingen, the Austro-Hungarian ambassador, broke off diplomatic relations with Serbia and left the country.
One of the key accusations made by Austria-Hungary against Serbia was that it had failed to suppress the Pan-Serbian movement and had allowed anti-Austrian societies and groups to form and operate within its borders. This movement was seen as a threat to the Austro-Hungarian Monarchy and was believed to have played a role in the assassination of Archduke Franz Ferdinand. Serbia was also accused of not doing enough to prevent the spread of dangerous propaganda against the Monarchy.
The Pan-Serbian movement was a nationalist movement that sought to unite all Serbs into a single state, or at least gain greater autonomy for Serbs living within the Austro-Hungarian Empire. This movement had gained significant support in Serbia and among Serbs living in Bosnia and Herzegovina, which was then part of the Austro-Hungarian Empire. The movement was seen as a threat to the stability of the Empire, as it encouraged separatism and challenged the authority of the Monarchy.
In response to the accusations, Serbia claimed that it had warned Austria-Hungary of the impending assassination and that it was not complicit in the plot. However, Austria-Hungary refused to release the results of its official inquiry, citing a lack of conclusive evidence. Despite warnings that an Austro-Serbian war could easily escalate into a world war, Austria-Hungary persisted in its demands and, on July 28, 1914, declared war on Serbia. This eventually led to the outbreak of World War I, as other European powers became involved, either to defend their allies or to pursue their own interests.
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Austria-Hungary accused Serbia of not cooperating with investigations
On June 28, 1914, the heir to the Austro-Hungarian throne, Archduke Franz Ferdinand, and his wife, the Duchess of Hohenburg, were assassinated in Sarajevo, Bosnia. The assassin, a Bosnian student named Gavrilo Princip, was arrested and held for trial. Despite Serbia's denial of any involvement in the plot, Austria-Hungary accused Serbia of complicity in the assassination and issued an ultimatum on July 23, 1914, demanding an inquiry into the assassination and the suppression of anti-Austrian propaganda and terrorist organizations within Serbia.
The Serbian government's defiance of the ultimatum appealed to international observers, but it made little difference to Vienna. The Austro-Hungarian ambassador broke off diplomatic relations with Serbia, and Austria-Hungary declared war on Serbia on July 28, 1914, leading to the outbreak of World War I. The conflict devastated Europe and ultimately ended the Austro-Hungarian empire.
In the aftermath of the assassinations, Serbian envoys to France and Russia initially claimed that Serbia had warned Austria-Hungary of the impending plot. However, Serbia later denied making any warnings and denied knowledge of the assassination plan. Austro-Hungarian and German diplomats requested investigations from their Serbian and Russian counterparts but were rebuffed. Despite lacking conclusive evidence, Austria-Hungary persisted in its accusations against Serbia, and Germany supported its ally.
The investigation into the assassination of Archduke Franz Ferdinand implicated Serbian citizens and officials. The three young Bosnian assassins, including Princip, stated that they had received support and training from Serbian intelligence officers and freedom-fighting groups. A total of twenty-five people were indicted as a result of the investigation, including Bosnian Serbs and Croats, all of whom were Austro-Hungarian citizens.
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Serbia was accused of not taking action against terrorist organisations
On June 28, 1914, the heir to the Austro-Hungarian throne, Archduke Franz Ferdinand, and his wife, the Duchess of Hohenburg, were assassinated in Sarajevo, Bosnia. The assassin, a Bosnian student named Gavrilo Princip, was arrested and held for trial. Despite Serbia's denial of any involvement, Austria-Hungary accused the Serbian government of either orchestrating the assassination or, at the very least, having knowledge of the plot.
Austria-Hungary issued an ultimatum to Serbia on July 23, 1914, which included ten demands, some of which were aimed at addressing Serbia's alleged lack of action against terrorist organisations. Specifically, Serbia was accused of allowing its soil to be used as a base for anti-Austrian intrigue and propaganda. One of the demands required Serbia to suppress all anti-Austrian propaganda and take steps to root out and eliminate terrorist organisations within its borders. This included the organisation known as the Black Hand, which was believed to have aided the assassin by providing weapons and safe passage.
Serbia was given only 48 hours to respond to the ultimatum, which made it extremely challenging for the Serbian government to fully comply with all the demands. The ultimatum demanded that Serbia accept an Austro-Hungarian inquiry into the assassination, despite Serbia's insistence that it was already conducting its own internal investigation. Serbia's refusal to accept foreign interference in its internal affairs was a significant point of contention.
The Serbian government, led by Prime Minister Nikola Pašić, was in a difficult position due to the upcoming elections scheduled for August 14. Pašić was unwilling to appear weak by submitting to all of Austria-Hungary's demands, especially those that violated Serbia's sovereignty. Serbia's response to the ultimatum effectively accepted all terms except for the demand for an Austro-Hungarian inquiry, citing it as a violation of their Constitution and criminal procedure laws.
While Serbia's response demonstrated a willingness to de-escalate the situation, it was not enough to prevent the conflict. Austria-Hungary broke diplomatic relations with Serbia, and on July 28, 1914, Austria-Hungary declared war on Serbia. This chain of events set off a series of alliances and hostilities that ultimately led to the outbreak of World War I, a conflict that devastated Europe and profoundly shaped the course of the twentieth century.
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Frequently asked questions
The assassination of Archduke Franz Ferdinand and his wife, the Duchess of Hohenburg, in Sarajevo, Bosnia, on June 28, 1914.
That Serbia had done nothing to prevent the formation of societies and groups against the Monarchy, and that they had allowed their soil to be used as a base for anti-Austrian intrigue.
The ultimatum included ten demands, the most significant being that Serbia accept an Austro-Hungarian inquiry into the assassination, suppress anti-Austrian propaganda, and take steps to eliminate terrorist organizations within its borders.
Serbia's response effectively accepted all terms of the ultimatum except one: they would not accept Austria-Hungary's participation in any internal inquiry, citing it as a violation of their Constitution and criminal procedure laws.
Austria-Hungary broke off diplomatic relations with Serbia and declared war on July 28, 1914, leading to the Great War, also known as World War I, which devastated Europe and ended the Austro-Hungarian empire.








































