On the 18th of January, 1871, Bismarck proclaimed the German Empire in the Hall of Mirrors in the Palace of Versailles. Germany had been unified be Prussia, under its prime minister Otto von Bismarck. The unification involved three wars and, it has been claimed, was not created by a desire for nationalism but a struggle to determine Prussian dominance within the German states. Up until World War II, it was widely accepted that Bismarck alone was responsible for unification. However, modern historians agree that Bismarck did not begin unification from nothing and have identified other factors influencing unification and the spread of nationalist ideas from 1815. These historians argue that if it weren't for factors such as the Zollverien, cultural and political nationalism and the Strength of Prussia and decline of Austria, Bismarck would not have been nearly as successful.
Before Bismarck burst onto the political scene in 1862, it is clear to see that the foundations for unification were already laid, this is shown in the economic strength of Prussia prior to 1871. The Zollverien was and important factor as it brought many German states together economically and excluded Austria. Prussia had gained valuable land in the west in 1815. this land provided her with valuable coal and iron resources. Prussia became quite rich due to trade with other countries and many of the smaller states realised that they could benefit from trade with each other. Trade between states was very difficult so to encourage trade, Prussia established a customs union in 1818. Member states would not have to pay taxes as goods were transported from one state to another. By 1836, this union was called the Zollverien and had 25 member states, equating to around 26 million people. As trade increased, ideas spread and the states realised that they benefited from closer contact with each other. The