If you find yourself involved in a German wedding, there are some customs and traditions of which you should be aware.
Some of these are observed nation-wide and some are observed in certain regions.
Economically, the creation of the Prussian Zollverein (customs union) in 1818, and its subsequent expansion to include other states of the German Confederation, reduced competition between and within states.
The model of diplomatic spheres of influence resulting from the Congress of Vienna in 1814–15 after the Napoleonic Wars endorsed Austrian dominance in Central Europe.
The negotiators at Vienna took no account of Prussia's growing strength within and among the German states and so failed to foresee that Prussia would rise to challenge Austria for leadership.
Military successes—especially those of Prussia—in three regional wars generated enthusiasm and pride that politicians could harness to promote unification.
This experience echoed the memory of mutual accomplishment in the Napoleonic Wars, particularly in the War of Liberation of 1813–14.
The Holy Roman Emperor had been often called "Emperor of all the Germanies"; contemporary news accounts frequently referred to "The Germanies", and in the empire, its members of higher nobility were referred to as "Princes of Germany" or "Princes of the Germanies"—for the lands once called East Francia had been organized and governed as pocket kingdoms since before the rise of Charlemagne (800 AD).
Given the mountainous terrains of much of the territory, it was inevitable that isolated peoples would develop cultural, educational, linguistic, and religious differences over such a lengthy time period.
They conclude that factors in addition to the strength of Bismarck's Realpolitik led a collection of early modern polities to reorganize political, economic, military, and diplomatic relationships in the 19th century.
Reaction to Danish and French nationalism provided foci for expressions of German unity.
Despite the legal, administrative, and political disruption associated with the end of the Empire, the people of the German-speaking areas of the old Empire had a common linguistic, cultural, and legal tradition further enhanced by their shared experience in the French Revolutionary Wars and Napoleonic Wars.