1. Background

There is, in political geography, no Germany proper to speak of. There are Kingdoms and Grand Duchies, and Duchies and Principalities, inhabited by Germans, and each separately ruled by an independent sovereign with all the machinery of State. Yet there is a natural undercurrent tending to a national feeling and toward a union of the Germans into one great nation, ruled by one common head as a national unit.

On August 6, 1806, Habsburg Emperor Francis II had abdicated the throne of the Holy Roman Empire in the course of the Napoleonic Wars with France, thereby ending the loose Empire. Despite its later name affix "of the German Nation", the Holy Roman Empire had never been a nation state. Instead its rulers over the centuries had to cope with a continuous loss of authority to its constituent Imperial States. The disastrous Thirty Years' War proved especially fatal to the Holy Roman Emperor's authority, as the mightiest entities, the Austrian Habsburg Monarchy and Brandenburg-Prussia, evolved into rivaling European absolute powers with territory reaching far beyond Imperial borders. The many small city-states splintered, meanwhile. In the 18th century the Holy Roman Empire consisted of over 1800 separate territories governed by distinct authorities.

This rivalry between Austria and Prussia resulted in the War of the Austrian Succession, and outlasted the French Revolution and Napoleon's domination of Europe. Facing the dissolution of the Holy Roman Empire, the ruling House of Habsburg proclaimed the Austrian Empire in the lands of the Habsburg Monarchy instead, retaining the imperial title. The 1815 restoration by the Final Act of the Vienna Congress established the German Confederation, which was not a nation but a loose association of sovereign states on the territory of the former Holy Roman Empire.

While a number of factors swayed allegiances in the debate, the most prominent was religion. The Großdeutsche Lösung would have implied a dominant position for Catholic Austria, the largest and most powerful German state of the early 19th century. As a result, Catholics and Austria-friendly states usually favored Großdeutschland. A unification of Germany led by Prussia would mean the domination of the new state by the Protestant House of Hohenzollern, a more palatable option to Protestant northern German states. Another complicating factor was the Austrian Empire's inclusion of a large number of non-Germans, such as Hungarians, Czechs, South Slavs, Italians, Poles, Ruthenians, Romanians and Slovaks. The Austrians were reluctant to enter a unified Germany if it meant giving up their non-German speaking territories.

Central Europe circa 1820 showing the Kingdom of Prussia (blue), the Austrian Empire (yellow) and independent German states (grey). The red line marks the border of the German Confederation; both Prussia and Austria controlled lands outside the Confederation. https://handwiki.org/wiki/index.php?curid=2039597

2. March Revolution

First German National assembly at St. Paul's Church, Frankfurt 1848/49. https://handwiki.org/wiki/index.php?curid=1332634

In 1848, German liberals and nationalists united in revolution, forming the Frankfurt Parliament. The Greater German movement within this National Assembly demanded the unification of all German-populated lands into one nation. In general, the left favored a republican Großdeutsche Lösung, whereas the liberal center favored the Kleindeutsche Lösung with a constitutional monarchy.

Those supporting the Großdeutsche position argued that since the Habsburgs had ruled the Holy Roman Empire for almost 400 years from 1440 to 1806 (the only break coming from the extinction of the Habsburg male line in 1740 to the election of Francis I in 1745), Austria was best suited to lead the unified nation. However, Austria posed a problem because the Habsburgs ruled large chunks of non-German-speaking territory. The largest such area was the Kingdom of Hungary, which also included large Slovak, Romanian and Croat populations. Austria further comprised numerous possessions with predominantly non-German populations, including Czechs in the Bohemian lands, Poles, Rusyns and Ukrainians in the Galician province, Slovenes in Carniola, and Italians in Lombardy–Venetia and Trento, which was still incorporated into the Tyrolean crown land, altogether making up the larger part of the Austrian Empire. Except for Bohemia, Carniola, and Trento, these territories were not part of the German Confederation because they had not been part of the former Holy Roman Empire, and none of them desired to be included in a German nation-state. The Czech politician František Palacký explicitly rejected the offered mandate to the Frankfurt assembly, stating that the Slavic lands of the Habsburg Empire were not a subject of German debates. On the other hand, for Austrian prime minister Prince Felix of Schwarzenberg, the only accession of the Habsburg Empire as a whole was acceptable because it had no intention to part from its non-German possessions and dismantle in order to remain in an all-German Empire.

Prussia's expansion into the German Empire from 1807 (dark blue): green territories added according to the 1815 Congress of Vienna, light blue territories after the Austro-Prussian War of 1866. Yellow territories joined the German Empire in 1871 after the Franco-Prussian War. https://handwiki.org/wiki/index.php?curid=1575950

Thus, some members of the assembly, and Prussia in particular, promoted the Kleindeutsche Lösung, which excluded the whole Austrian Empire with its German and its non-German possessions. They argued that Prussia, as the only Great Power with a predominantly German-speaking population, was best qualified to lead the newly unified Germany. Yet, the drafted constitution provided for the possibility for Austria to join without its non-German possessions later. On March 30, 1849, the Frankfurt parliament offered the German Imperial crown to King Frederick William IV of Prussia, who rejected it. The revolution failed and several subsequent attempts by Prince Schwarzenberg to build up a German federation headed by Austria came to nothing.

3. Austro-Prussian War and Franco-Prussian War

Language map from a German atlas, printed in 1881. https://handwiki.org/wiki/index.php?curid=1447775

These efforts were finally terminated by Austria's humiliating defeat in 1866 Austro-Prussian War. After the Peace of Prague, the Prussian chancellor Otto von Bismarck, now at the helm of German politics, pursued the expulsion of Austria and managed to unite all German states except Austria under Prussian leadership, while the Habsburg lands were shaken by ethnic nationalist conflicts, only superficially resolved with the Austro-Hungarian Compromise of 1867.

At the same time, Bismarck established the North German Confederation, seeking to prevent the Austrian and Bavarian Catholics in the south from being a predominant force in a mainly Protestant Prussian Germany. He successfully used the Franco-Prussian War to convince the other German states, including the Kingdom of Bavaria, to stand with Prussia against the Second French Empire; Austria-Hungary did not participate in the war. After Prussia's speedy victory, the debate was settled in favor of the Kleindeutsche Lösung in 1871. Bismarck used the prestige gained from the victory to maintain the alliance with Bavaria and declared the German Empire. Protestant Prussia became the dominant power of the new state, and Austria-Hungary was excluded remaining separate polity. The Little German solution prevailed.

4. Later Influence

Kurt Schuschnigg, Austrian chancellor from 1934 to 1938, strongly opposed Hitler's annexation of Austria to the Third Reich. https://handwiki.org/wiki/index.php?curid=1424997

Voting ballot from 10 April 1938. The ballot text reads "Do you agree with the reunification of Austria with the German Reich that was enacted on 13 March 1938, and do you vote for the party of our leader Adolf Hitler?" The large circle is labeled "Yes", the smaller "No". https://handwiki.org/wiki/index.php?curid=1517979

The idea of Austrian territories with a significant German-speaking population joining a Greater German state was maintained by some circles both in Austria-Hungary and Germany. It was again promoted after the close of World War I and the dissolution of the Austro–Hungarian monarchy in 1918 by the proclamation of the rump state, German Austria. Proponents attempted to incorporate German Austria into the German Weimar Republic. However, this was prohibited by the terms of both the Treaty of Saint-Germain and the Treaty of Versailles, though Austrian political parties such as the Greater German People's Party and the Social democrats pursued this idea regardless.^[1]

The Austrofascism of Austria between 1934 and 1938 focused on the history of Austria and opposed the absorption of Austria into the Third Reich (according to the belief that Austrians were "better Germans").^[2] Austrian Chancellor Kurt Schuschnigg (1934–1938) called Austria the "better German state" but struggled to keep Austria independent, allying with Mussolini's Italy. Nevertheless, German nationalists' desire for a unified nation-state incorporating all Germans into a Greater Germany persisted.

In Germany, Adolf Hitler, an Austrian German by birth, was a firm proponent of the unification of Germany and Austria. A demand for a Greater Germany was included in a 1920 party platform of the Nazi Party.^[3] After Mussolini decided to ally with Hitler, Austria's position in the middle became untenable. In 1938, Hitler's long-desired union between his birthplace Austria and Germany (Anschluss) was completed, which violated the terms of the Treaty of Versailles; the League of Nations was unable to enforce the ban on such a union. The Anschluss was met with overwhelming approval of the German-Austrian people, and was confirmed by a referendum shortly after.^[4] The unification process was reinforced one month later by a referendum, supported by an overwhelming majority. Unlike the political situation in the 19th century when Austria had controlled large areas of non-German peoples, Austria was a shadow of its former power in 1938 and became by far the subordinate partner in the new unified German-speaking state. From 1938–1942, the former state of Austria was referred to as Ostmark ("Eastern March") by the new German state. In a reference to the 19th century "Greater German solution", the enlarged state was referred to as the Großdeutsches Reich ("Greater German Reich") and colloquially as Großdeutschland. The names were informal at first, but the change to Großdeutsches Reich became official in 1943. As well as Germany (pre-World War II borders), Austria, and Alsace-Lorraine, the Großdeutsches Reich included the Grand Duchy of Luxembourg, Sudetenland, Bohemia and Moravia, the Memel Territory, the Polish areas annexed by Nazi Germany, the Free State of Danzig, and the "General Government" territories (territories of Poland under German military occupation).

4.1. East and West Germany and Reunification

Occupation zone borders in Germany, 1947. The territories east of the Oder–Neisse line under Polish and Soviet administration and Saar Protectorate shown as white. https://handwiki.org/wiki/index.php?curid=2070553

This unification lasted only until the end of World War II. With the defeat of the Nazi regime in 1945, "Greater Germany" was separated into West Germany, East Germany, and Austria by the Allied Powers. In addition, Germany was stripped of much of historic eastern Germany (i.e. the bulk of Prussia), most of which was annexed to Poland, with a small portion annexed to the Soviet Union. Luxembourg, the Czech (via Czechoslovakia), and the Slovenian lands (via Yugoslavia) regained their independence from German control.

The German Question was a central aspect of the origins of the Cold War. The legal and diplomatic intercourse between the Allies regarding the treatment of the German Question brought forward the elements of intervention and coexistence which formed the basis for a relatively peaceful postwar international order.^[5] The division of Germany started with the creation of four occupation zones, continued with establishing two German states (West Germany and East Germany), was deepened in the period of Cold War with the Berlin Wall from 1961 and existed until 1989/1990. After the Uprising of 1953 in East Germany, the official holiday in the Federal Republic of Germany was set on 17 June and was named "Day of German Unity", in order to remind all Germans of the “open” (unanswered) German Question (die offene Deutsche Frage), which meant the call for reunification.

Modern Germany's territory, after the reunification of East and West Germany in 1990, is closer to what the Kleindeutsche Lösung envisioned (aside from the fact large areas of the former Prussia were no longer part of Germany) than the Großdeutsche Lösung, for Austria remains a separate country. Because of the idea's association with the Third Reich, there are no mainstream political groups in Austria or Germany that advocate a "Greater Germany" today; those that do are often regarded as fascist and/or neo-Nazis.

5. The German Question and Switzerland

In general, German-speaking Switzerland showed little appetite to join with either Austria or Prussia after gradually gaining independence from the Habsburgs in the 1200s–1400s, which was formalized in 1648. The occasional intellectual did support this, however. Conrad Ferdinand Mayer, a Swiss writer, was so impressed with Prussia's victory in the Franco-Prussian war that he became staunchly supportive of a full German unification. His epic Hutten's Last Days^[6] serves as a manifesto for his sympathies for the cause. Among Germans, some explicitly included Switzerland in their dreams of a unified German state; the poet Ernst Moritz Arndt, for example, includes Switzerland in his imagined future realm of Germany in his poem ""Des Deutschen Vaterland".^[7]