Otto von Bismarck in the context of "German Empire"

Militarism is the belief or the desire of a government or a people that a state should maintain a strong military capability and to use it aggressively to expand national interests and/or values. It may also imply the glorification of the military and of the ideals of a professional military class and the "predominance of the armed forces in the administration or policy of the state" (see also: stratocracy and military junta).

At the Congress of Berlin (13 June – 13 July 1878), the major European powers revised the territorial and political terms imposed by the Russian Empire on the Ottoman Empire by the Treaty of San Stefano (March 1878), which had ended the Russo-Turkish War of 1877–1878. The Congress was the result of escalating tensions; particularly British opposition to Russian hegemony over the Ottoman Empire in the Balkans, through the creation of a Russian-aligned 'Greater Bulgaria'. To secure the European balance of power in favour of its splendid isolation achieved after the Crimean War, Britain stationed the Mediterranean Fleet near Constantinople to enforce British demands. To avoid war, Otto von Bismarck, Chancellor of the newly formed German Empire, was asked to mediate a solution that would restore the Ottoman Empire's position as a counterbalance to Russian influence in the Mediterranean and the Balkans, in line with the principles of the 1856 Treaty of Paris.

Attended by delegates from Europe's then six great powers: Russia, Great Britain, France, Austria-Hungary, Italy, and Germany; the Ottomans as well as representatives of four Balkan states (Greece, Serbia, Romania and Montenegro), the Congress culminated in the Treaty of Berlin (13 July 1878). This agreement essentially dismantled the autonomous Greater Bulgarian State envisaged at San Stefano, and reorganised the borders of south-eastern Europe. The main results were the Austro-Hungarian forcible occupation of Bosnia and Herzegovina, the British de facto annexation of Cyprus under false pretenses, and the formal recognition of the self-declared independence of Romania, Serbia and Montenegro; allies of Russia in the previous war. While the settlement averted war, it exacerbated nationalist grievances in the Balkans and deepened the rivalry between Britain and Russia (The Great Game), contributing to long-term regional instability that foreshadowed the Balkan Wars and World War I.

The Treaty of Berlin (formally the Treaty between Austria-Hungary, France, Germany, Great Britain and Ireland, Italy, Russia, and the Ottoman Empire for the Settlement of Affairs in the East) was signed on 13 July 1878. In the aftermath of the Russian victory against the Ottoman Empire in the Russo-Turkish War of 1877–1878, the major powers restructured the map of the Balkan region. They reversed some of the extreme gains claimed by Russia in the preliminary Treaty of San Stefano, but the Ottomans lost their major holdings in Europe. It was one of three major peace agreements in the period after the 1815 Congress of Vienna. It was the final act of the Congress of Berlin (13 June – 13 July 1878) and included the United Kingdom, Austria-Hungary, France, Germany, Italy, Russia and the Ottoman Empire. Chancellor of Germany Otto von Bismarck was the chairman and dominant personality.

The most important task of the Congress was to decide the fate of Bulgaria, but Bulgaria itself was excluded from participation in the talks, at Russian insistence. At the time, as it was not a sovereign state, Bulgaria was not a subject of international law, and the same went for the Bulgarians themselves. The exclusion was already an established fact in the great powers' Constantinople Conference, which had been held one year before without any Bulgarian participation.

The concept of Germany as a distinct region in Central Europe can be traced to Julius Caesar, who referred to the unconquered area east of the Rhine as Germania, thus distinguishing it from Gaul. The victory of the Germanic tribes in the Battle of the Teutoburg Forest (AD 9) prevented annexation by the Roman Empire, although the Roman provinces of Germania Superior and Germania Inferior were established along the Rhine. Following the Fall of the Western Roman Empire, the Franks conquered the other West Germanic tribes. When the Frankish Empire was divided among Charles the Great's heirs in 843, the eastern part became East Francia, and later Kingdom of Germany. In 962, Otto I became the first Holy Roman Emperor of the Holy Roman Empire, the medieval German state.

During the High Middle Ages, the Hanseatic League, dominated by German port cities, established itself along the Baltic and North Seas. The development of a crusading element within German Christendom led to the Northern Crusades and the establishment of the State of the Teutonic Order along the Southern Baltic coast in what would later become Prussia. In the Investiture Controversy, the German Emperors resisted Catholic Church authority. In the Late Middle Ages, the regional dukes, princes, and bishops gained power at the expense of the emperors. Martin Luther led the Protestant Reformation within the Catholic Church after 1517, as the northern and eastern states became Protestant, while most of the southern and western states remained Catholic. The Thirty Years' War, a civil war from 1618 to 1648 brought tremendous destruction to the Holy Roman Empire. The estates of the empire attained great autonomy in the Peace of Westphalia, the most important being Austria, Prussia, Bavaria and Saxony. With the Napoleonic Wars, feudalism fell away and the Holy Roman Empire was dissolved in 1806. Napoleon established the Confederation of the Rhine as a German puppet state, but after the French defeat, the German Confederation was established under Austrian presidency. The German revolutions of 1848–1849 failed but the Industrial Revolution modernized the German economy, leading to rapid urban growth and the emergence of the socialist movement. Prussia, with its capital Berlin, grew in power. German universities became world-class centers for science and humanities, while music and art flourished. The unification of Germany was achieved under the leadership of the Chancellor Otto von Bismarck with the formation of the German Empire in 1871. The new Reichstag, an elected parliament, had only a limited role in the imperial government. Germany joined the other powers in colonial expansion in Africa and the Pacific.

German Reich (lit. 'German Empire' or 'German Realm', from German: Deutsches Reich) was the constitutional name for the German nation state that existed from 1871 to 1945. The Reich became understood as deriving its authority and sovereignty entirely from a continuing unitary German Volk ("national people"), with that authority and sovereignty being exercised at any one time over a unitary German "state territory" with variable boundaries and extent. Although commonly translated as "German Empire", the word Reich here better translates as "realm" or territorial "reach", in that the term does not in itself have monarchical connotations.

The name "German Reich" was officially proclaimed on 18 January 1871 at the Palace of Versailles by Otto von Bismarck and Wilhelm I of Prussia. After the annexation of Austria to Germany on 12–13 March 1938, the name "Greater German Reich" (German: Großdeutsches Reich) began to be used along with the official name "German Reich". According to the decree of the Chief of the Reich Chancellery Hans Lammers of 26 June 1943, the name "Greater German Reich" became mandatory in official documents.

The Holy Alliance (German: Heilige Allianz; Russian: Священный союз, romanized: Svyashchennyy soyuz), also called the Grand Alliance, was a coalition linking the absolute monarchist great powers of Austria, Prussia, and Russia, which was created after the final defeat of Napoleon at the behest of Emperor Alexander I of Russia and signed in Paris on 26 September 1815.

The alliance aimed to restrain secular liberalism in Europe in the wake of the devastating French Revolutionary Wars and the Napoleonic Wars; it nominally succeeded in this until the Crimean War. Chancellor Otto von Bismarck managed to reunite the Holy Alliance, as League of the Three Emperors, following the unification of Germany in 1871. However the alliance faltered by the 1880s due to Austrian and Russian conflicts of interest over the decline of the Ottoman Empire.

Albrecht Theodor Emil Graf von Roon (German pronunciation: [ˈalbʁɛçt fɔn ˈʁoːn]; 30 April 1803 – 23 February 1879) was a Prussian soldier and statesman. As Minister of War from 1859 to 1873, Roon, along with Otto von Bismarck and Helmuth von Moltke, was a dominating figure in Prussia's government during the key decade of the 1860s, when a series of successful wars against Denmark, Austria, and France led to German unification under Prussia's leadership. A moderate conservative and supporter of executive monarchy, he was an avid modernizer who worked to improve the efficiency of the army.
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The Franco-Prussian War or Franco-German War, often referred to in France as the War of 1870, was a conflict between the Second French Empire and the North German Confederation led by the Kingdom of Prussia. Lasting from 19 July 1870 to 28 January 1871, the conflict was caused primarily by France's determination to reassert its dominant position in continental Europe, which appeared in question following the decisive Prussian victory over Austria in 1866.

After a prince of the Roman Catholic branch Hohenzollern-Sigmaringen had been offered the vacant Spanish throne in 1870 and had withdrawn his acceptance, the French ambassador approached Prussian King Wilhelm I at his vacationing site in Ems demanding Prussia renounce any future claims, which Wilhelm rejected. The internal Ems dispatch reported this to Berlin on July 13; Prussian chancellor Otto von Bismarck quickly then made it public with altered wording. Thus the French newspapers for July 14, the French national holiday contained translations of Bismarck's press release, but not a report from their own ambassador. A crowd in the streets of Paris demanded war, and soon French mobilization was ordered.