
The rivalry between Prussia and Austria, or 'German dualism', was an important element of the German question in the 19th century. The two states were the most powerful German states in the Holy Roman Empire by the 18th and 19th centuries and engaged in a struggle for supremacy among smaller German states. This rivalry culminated in the Austro-Prussian War of 1866, which resulted in Prussian dominance over the German states. Prussia had been contesting Austria's supremacy in Germany since at least 1850, and the two powers first met in the Silesian Wars and Seven Years' War during the middle 18th century.
| Characteristics | Values |
|---|---|
| Date | 1866 |
| Combatants | Austrian Empire, Kingdom of Prussia, Kingdom of Italy |
| Outcome | Prussian victory, abolition of the German Confederation, Italian annexation of Venetia |
| Causes | Dispute over administration of Schleswig-Holstein, rivalry for hegemony in Germany |
| Battles | Battle of Königgrätz |
| Commanders | Helmuth von Moltke (Prussian Chief of General Staff), King William I (King of Prussia) |
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What You'll Learn

The War of the Austrian Succession
The war was fought over the right of Maria Theresa, daughter of Charles VI, to succeed her father as ruler of the Habsburg monarchy. France, Prussia, and Bavaria saw it as an opportunity to challenge Habsburg power, while Maria Theresa was backed by Britain, the Dutch Republic, and Hanover, collectively known as the Pragmatic Allies.
Prussia, often considered the clear winner of the conflict, acquired Silesia from Austria. This outcome undermined the long-standing Anglo-Austrian Alliance, as Maria Theresa deeply resented Britain's insistence that she cede Silesia to make peace. She made it her main objective to regain the province, which was one of the richest Habsburg provinces.
The war also involved colonial conflict, particularly between Britain and France. The French seized the British East India Company's trading base of Madras, while the British unsuccessfully besieged Pondicherry. In Canada, a force of British colonists, supported by the Royal Navy, captured the French fortress of Louisbourg.
The Treaty of Aix-la-Chapelle, signed in October 1748, preserved the bulk of the Austrian inheritance for Maria Theresa, and France agreed to leave the Austrian Netherlands and give back Madras in return for Louisbourg.
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The Silesian Wars
The Second Silesian War (1744-1745) saw Prussia again victorious over Austria, confirming its conquest of Silesia in the Treaty of Dresden. The Third Silesian War (1756-1763) formed part of the Seven Years' War, which also involved other European powers such as France, England, and Saxony. An armistice in November 1762 ended the conflict, and the Treaty of Hubertusburg in February 1763 acknowledged the status quo, with Prussia retaining control of Silesia.
All three Silesian Wars ended in Prussian victories, and Prussia emerged as a new European great power, while Austria's defeat damaged the prestige of the House of Habsburg. The conflict over Silesia foreshadowed the wider Austro-Prussian struggle for hegemony over the German-speaking peoples, which culminated in the Austro-Prussian War of 1866, where Prussia solidified its dominance over the German states.
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The Seven Years' War
In 1756, Britain and Prussia formed a military alliance, agreeing that Britain would not aid Austria in a conflict over Silesia if Prussia protected Hanover from France. In response, France and Austria signed the Second Treaty of Versailles, forming a new offensive alliance. The same year, Prussia, led by King Frederick II (also known as Frederick the Great), invaded Saxony, commencing the Seven Years' War.
The war ended in 1763 with the signing of the Treaty of Paris and the Treaty of Hubertusburg. The Treaty of Paris was signed by Britain, France, and Spain, while the Treaty of Hubertusburg was signed by Prussia, Austria, and Saxony. The war was a crucial turning point, especially in North America and Canada. France ceded New France to Britain and largely withdrew from the continent, ending its supremacy in Europe. Prussia, on the other hand, confirmed its status as a great power, challenging Austria for dominance within the Holy Roman Empire and altering the European balance of power.
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The German Dualism
The roots of the rivalry can be traced back to the 17th century, when the Hohenzollern electors became dukes of Prussia, a fief of the Polish Crown, and the lands of Brandenburg-Prussia were ruled in personal union. In the following decades, the Prussian state grew in strength, acquiring territories such as Farther Pomerania and reaching full sovereignty in Ducal Prussia. Meanwhile, the Austrian House of Habsburg had also been expanding its power and influence, with a centuries-long rise that began with King Rudolph's victory at the 1278 Battle on the Marchfeld.
The death of the Habsburg Emperor Charles VI in 1740 marked a significant escalation in the rivalry. The new Prussian king, Frederick II, invaded Austrian-controlled Silesia, starting the First Silesian War. This conflict was driven by Prussia's desire for the populousness, mineral resources, and advanced economy of Silesia. Despite Austrian resistance, Prussia ultimately emerged victorious and secured control of Silesia through the Treaties of Dresden (1745) and Aix-la-Chapelle (1748).
The rivalry between Prussia and Austria continued to escalate, with both powers engaging in a struggle for supremacy among the smaller German states. This struggle culminated in the Austro-Prussian War of 1866, which was fought between the Austrian Empire and the Kingdom of Prussia, each aided by various allies within the German Confederation. Prussia's military advantages, such as the use of breech-loading needle guns, played a key role in their victory. As a result of the war, Prussia established dominance over the German states, shifting the balance of power away from Austrian hegemony.
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The Austro-Prussian War
The war was the result of a rivalry between Austria and Prussia, with both sides vying for dominance over the German states. Prussia had been challenging Austria's hegemony since at least 1850, and the immediate cause of the war was a dispute over the administration of Schleswig and Holstein, which the two powers had jointly conquered from Denmark in 1864. Prussia, led by Chief of General Staff Helmuth von Moltke, rapidly mobilized its army and advanced into Saxony and Bohemia, where the Austrian army was gathering to invade Silesia. The main campaign of the war took place in the Habsburg Empire's Kingdom of Bohemia, where the two sides met at the Battle of Königgrätz (Hradec Králové). Prussia's modernized army, superior military tactics, and advanced weaponry, such as breech-loading needle guns, gave them a significant advantage over Austria.
The war ended with a Prussian victory, formalized by the Treaty of Prague on 23 August 1866. The treaty resulted in significant territorial changes: Prussia annexed several of Austria's former allies, including Schleswig-Holstein, Hanover, Hesse-Kassel, Nassau, and Frankfurt. Additionally, Austria ceded Venetia to Italy, and was permanently excluded from German affairs. Prussia's triumph led to the abolition of the German Confederation and its replacement by the North German Confederation, uniting all northern German states under Prussian leadership, while excluding Austria and the other southern German states.
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Frequently asked questions
The Austro-Prussian War was fought in 1866 between the Austrian Empire and the Kingdom of Prussia, with both sides aided by various allies within the German Confederation. Prussia also had the Kingdom of Italy as an ally. The war resulted in Prussian dominance over the German states.
The war was caused by a dispute over the administration of Schleswig-Holstein, which both Prussia and Austria had conquered from Denmark and agreed to jointly occupy after the Second Schleswig War in 1864. Prussia protested against Austria's decision to allow the estates of the duchies to call up a united assembly, claiming it breached the principle of joint sovereignty.
Prussia won the war, resulting in a shift in power among the German states away from Austria and towards Prussia. The German Confederation was abolished and replaced by the unification of northern German states in the North German Confederation, which excluded Austria and the other southern German states. The war also resulted in the Italian annexation of the Austrian realm of Venetia.
German dualism refers to the rivalry and tension between Prussia and Austria as they dominated German affairs and checked each other's power. Both Prussia and Austria were the most powerful German states in the Holy Roman Empire by the 18th and 19th centuries and engaged in a struggle for supremacy among smaller German states.
The Silesian Wars were a series of three wars fought between Prussia and Austria in the 18th century over the province of Silesia, which was part of the Habsburg monarchy. Prussia desired Silesia for its populousness, mineral resources, and advanced economy. The First Silesian War began in 1740 when King Frederick the Great of Prussia invaded Austrian-controlled Silesia.











































