Unification of Germany in the context of "Anschluss"

The German Empire (German: Deutsches Reich), also referred to as Imperial Germany, the Second Reich, or simply Germany, was the period of the German Reich from the unification of Germany in 1871 until the November Revolution in 1918, when Germany changed its form of government to a republic. The German Empire consisted of 25 states, each with its own nobility: four constituent kingdoms, six grand duchies, five duchies (six before 1876), seven principalities, three free Hanseatic cities, and one imperial territory. While Prussia was only one of the four kingdoms in the realm, it contained about two-thirds of the Empire's population and territory, and Prussian dominance was also constitutionally established, since the King of Prussia was also the German Emperor (Deutscher Kaiser).

The empire was founded on 18 January 1871, when the south German states, except for Austria, Switzerland and Liechtenstein, joined the North German Confederation. The new constitution came into force on 16 April, changing the name of the federal state to the German Empire and introducing the title of German Emperor for Wilhelm I, King of Prussia from the House of Hohenzollern. Berlin remained its capital, and Otto von Bismarck, Minister President of Prussia, became chancellor, the head of government. After 1850, the states of Germany had rapidly become industrialized. In 1871, Germany had a population of 41 million people; by 1913, this had increased to 68 million. A heavily rural collection of states in 1815, the now united Germany became predominantly urban. German factories were often larger and more modern than many of their British and French counterparts, but the preindustrial sector was more backward. The success of the German Empire in the natural sciences was such that one-third of all Nobel Prizes went to German inventors and researchers. During its 47 years of existence, the German Empire became an industrial, technological, and scientific power in Europe, and by 1913, Germany was the largest economy in continental Europe and the third largest in the world. Germany also became a great power, building the longest railway network of Europe, the world's strongest army, and a fast-growing industrial base. Starting very small in 1871, in a decade, the navy became second only to Britain's Royal Navy.

The Kingdom of Bavaria (German: Königreich Bayern [ˈkøːnɪkʁaɪç ˈbaɪɐn]; Bavarian: Kinereich Bayern [ˈkɪnəraɪ̯x ˈb̥ajɛɐ̯n]; spelled Baiern until 1825) was a German state that succeeded the former Electorate of Bavaria in 1806 and continued to exist until 1918. With the unification of Germany into the German Empire in 1871, the kingdom became a federated state of the new empire and was second in size, power, and wealth only to the leading state, the Kingdom of Prussia.

The polity's foundation dates back to the ascension of Elector Maximilian IV Joseph of the House of Wittelsbach as King of Bavaria in 1806. The crown continued to be held by the Wittelsbachs until the kingdom came to an end in 1918. Most of the border of modern Germany's Free State of Bavaria was established after 1814 with the Treaty of Paris, in which the Kingdom of Bavaria ceded Tyrol and Vorarlberg to the Austrian Empire while receiving Aschaffenburg and Würzburg.

Law enforcement in Germany is constitutionally vested solely with the states, which is one of the main features of the German political system.

Policing has always been a responsibility of the German states even after 1871 when the country was unified. The 1919 constitution of the Weimar Republic did provide for the possibility of creating a national police force, should the necessity arise, but it was only in the Nazi era that Gestapo (Secret State Police) were unified under central control and a national police force created (the Reich Security Main Office—Reichssicherheitshauptamt, or RSHA). The police became a tool of the centralized state and the Nazi party.Following the defeat of 1945, Germany was divided; in 1949 the three western zones were turned into the new West Germany, while the Soviet zone became East Germany. Each country pursued a different path concerning law enforcement.

The Kingdom of Prussia (German: Königreich Preußen, pronounced [ˈkøːnɪkʁaɪç ˈpʁɔʏsn̩] ) was a German state that existed from 1701 to 1918. It played a significant role in the unification of Germany in 1871 and was a major constituent of the German Empire until its dissolution in 1918. Although it took its name from the region called Prussia, it was based in the Margraviate of Brandenburg. Its capital was Berlin.

The kings of Prussia were from the House of Hohenzollern. The polity of Brandenburg-Prussia, predecessor of the kingdom, became a military power under Frederick William, Elector of Brandenburg, known as "The Great Elector". As a kingdom, Prussia continued its rise to power, especially during the reign of Frederick II "the Great". Frederick the Great was instrumental in starting the Seven Years' War (1756–1763), holding his own against Austria, Russia, France and Sweden and establishing Prussia's dominant role among the German states, as well as establishing the country as a European great power through the victories of the powerful Prussian Army. Prussia made attempts to unify all the German states (excluding the German cantons in Switzerland) under its rule, and whether Austria would be included in such a unified German domain became an ongoing question. After the Napoleonic Wars led to the creation of the German Confederation, the issue of unifying the German states caused the German revolutions of 1848–1849, with representatives from all states attempting to unify under their own constitution. Attempts to create a federation remained unsuccessful and the German Confederation collapsed in 1866 when the Austro-Prussian War ensued between its two most powerful member states.

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.

Austrians (German: Österreicher) are the citizens and nationals of Austria. The English term Austrians was applied to the population of Habsburg Austria from the 17th or 18th century. Subsequently, during the 19th century, it referred to the citizens of the Empire of Austria (1804–1867), and from 1867 until 1918 to the citizens of Cisleithania. In the closest sense, the term Austria originally referred to the historical March of Austria, corresponding roughly to the Vienna Basin in what is today Lower Austria.

Historically, Austrians were regarded as Germans and viewed themselves as such. The Austrian lands (including Bohemia) were part of the Holy Roman Empire and the German Confederation until the Austro-Prussian War in 1866 which resulted in Prussia expelling the Austrian Empire from the Confederation. Thus, when Germany was founded as a nation-state in 1871, Austria was not a part of it. In 1867, Austria was reformed into the Austro-Hungarian Empire. After the collapse of the Austro-Hungarian Empire in 1918 at the end of World War I, Austria was reduced to a rump state and adopted and briefly used the name the Republic of German-Austria (German: Republik Deutschösterreich) in an attempt for union with Germany, but was forbidden due to the Treaty of Saint-Germain-en-Laye (1919). The First Austrian Republic was founded in 1919. Nazi Germany annexed Austria with the Anschluss in 1938.

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.

Franz Joseph I or Francis Joseph I (German: Franz Joseph Karl [fʁants ˈjoːzɛf ˈkaʁl]; Hungarian: Ferenc József Károly [ˈfɛrɛnt͡s ˈjoːʒɛf ˈkaːroj]; 18 August 1830 – 21 November 1916) was Emperor of Austria, King of Hungary, and the ruler of the other states of the Habsburg monarchy from 2 December 1848 until his death in 1916. In the early part of his reign, his realms and territories were referred to as the Austrian Empire, but in 1867 they were reconstituted as the dual monarchy of Austria-Hungary. From 1 May 1850 to 24 August 1866, he was also president of the German Confederation.

In December 1848, Franz Joseph's uncle Emperor Ferdinand I abdicated the throne at Olomouc, as part of Minister President Felix zu Schwarzenberg's plan to end the Hungarian Revolution of 1848. Franz Joseph then acceded to the throne. In 1854, he married his first cousin Duchess Elisabeth in Bavaria, with whom he had four children: Sophie, Gisela, Rudolf, and Marie Valerie. Largely considered to be a reactionary, Franz Joseph spent his early reign resisting constitutionalism in his domains. The Austrian Empire was forced to cede its influence over Tuscany and most of its claim to Lombardy–Venetia to the Kingdom of Sardinia, following the Second Italian War of Independence in 1859 and the Third Italian War of Independence in 1866. Although Franz Joseph ceded no territory to the Kingdom of Prussia after the Austrian defeat in the Austro-Prussian War, the Peace of Prague (23 August 1866) settled the German Question in favour of Prussia, which prevented the unification of Germany from occurring under the House of Habsburg.

Otto Eduard Leopold, Prince of Bismarck, Count of Bismarck-Schönhausen, Duke of Lauenburg (/ˈbɪzmɑːrk/; born Otto Eduard Leopold von Bismarck-Schönhausen; 1 April 1815 – 30 July 1898) was a German statesman and diplomat who oversaw the unification of Germany and served as its first chancellor from 1871 to 1890. Bismarck's Realpolitik and firm governance resulted in his being popularly known as the Iron Chancellor (Eiserner Kanzler).

From Junker landowner origins, Bismarck rose rapidly in Prussian politics under King Wilhelm I of Prussia. He served as the Prussian ambassador to Russia and France and in both houses of the Prussian parliament. From 1862 to 1890, he held office as the minister president and foreign minister of Prussia. Under Bismarck's leadership, Prussia provoked three short, decisive wars against Denmark, Austria, and France. After Austria's defeat in 1866, he replaced the German Confederation with the North German Confederation, which aligned the smaller North German states with Prussia while excluding Austria. In 1870, Bismarck secured France's defeat with support from the independent South German states before overseeing the creation of a unified German Empire under Prussian rule. Following Germany's unification, he was given the aristocratic title Prince of Bismarck (Fürst von Bismarck). From 1871 onwards, his balance-of-power approach to diplomacy helped maintain Germany's position in a peaceful Europe. While averse to maritime colonialism, Bismarck acquiesced to elite and popular opinion by acquiring colonies.