Causes of The Franco-Prussian War - European Wars and The Balance of Power: 1865-1866

European Wars and The Balance of Power: 1865-1866

In October 1865, Napoleon III, ruler of France, met with Prussian Prime Minister Otto von Bismarck in Biarritz, France. It was there that the two men struck a deal- France would not get involved in any future actions between Prussia and Austria or ally herself with Austria if Prussia did not allow Austria to claim Venetia. When Austria and Prussia met in May 1866, Bismarck honored the agreement made in Biarritz the previous year and refused to allow Austria to have Venetia. Austria then attempted to guarantee Italy Venetia if they remained neutral, but the two nations were unable to agree on a suitable arrangement as an alliance formed earlier in the year bound Italy to Prussia. Napoleon III then committed a serious blunder by agreeing with Austria in a treaty to accept Venetia by allowing Austria to go to war with Prussia, a move which violated the agreement Napoleon had made with Bismarck.

After Prussia emerged victorious over the Austrian army at the Battle of Königgrätz (also known as Sadowa or Sadová) in the Austro-Prussian War of 1866, negotiations were being held between Austria and Prussia in July and August of that year. Unfortunately for Napoleon III, it was during this period that he first discovered that a bladder stone was causing him great pains, created from gonorrheal infection. His condition was so bad during these precious negotiations that he was forced to retire to Vichy to recuperate, removing himself from Paris. Although the emperor favored neutrality as to not to upset events, certain members of his circle thought it was an unwise move, considering the opportunity to prevent Prussia from becoming too strong. One of these men, foreign minister Édouard Drouyn de Lhuys, convinced the emperor to plant 80,000 men on the eastern border to convince Wilhelm I to maintain the balance of power in Europe. Despite this important victory, de Lhuys was subverted by several other ministers, and Napoleon III changed his mind, reverting back to a position of neutrality. This change of heart would end up causing de Lhuys to ultimately lose his position. Napoleon III's wife Empress Eugénie, who took an active part throughout his rule, referred to this time much later as "the critical date, the Empire's fatal date; it was during these months of July and August that our fate was sealed! Of all that period, there is not a single fact, not a single detail that has not remained in my mind."

Franz Joseph of Austria accepted Bismarck's terms under the Peace of Prague. Using this to his advantage, Bismarck declared the German Confederation of 1815 null and void, and created a new network of states under Prussian control. Frankfurt-am-Main, Hannover, Hesse-Kassel (or Hesse-Cassel), Holstein, Nassau, and Schleswig were annexed outright while Hesse-Darmstadt, Mecklenburg, Saxony, the Thuringian duchies, as well as the cities of Bremen, Hamburg, and Lübeck were combined into a new North German Confederation that governed nominally and was actually controlled by Prussia herself.

Bismarck was approached soon after the end of the war by Napoleon III's ambassador to Prussia, Vincent Benedetti. Benedetti brought with him a secret proposal by Napoleon III that France would approve of Bismarck's acquisition of the northern German states and their control over the southern German states if Prussia remained neutral while France annexed Belgium and Luxembourg. France had earlier guaranteed the independence of Belgium in the Treaty of London in 1839 as an "independent and perpetually neutral state", making the proposal a tacit agreement to break their promise. Bismarck was very surprised since he had already gained a powerful position in Europe by the armistice, and called Napoleon III's request among others later "like 'an innkeeper's bill' or a waiter asking for 'a tip'." He asked Benedetti to provide the proposal in writing, and the ambassador obliged his request. This document was to be important to Bismarck later on, to great effect.

The true views of Napoleon III on the subject of the balance of power in Europe can be found in a state circular handed to every diplomatic representative for France. In this paper dated September 1, 1866, the emperor saw the future of Europe after the Peace of Prague in this manner:

"Policy should rise superior to the narrow and mean prejudices of a former age. The Emperor does not believe that the greatness of a country depends upon the weakness of the nations which surround it, and he sees a true equilibrium only in the satisfied aspirations of the nations of Europe. In this, he is faithful to old convictions and to the traditions of his race. Napoleon I foresaw the changes which are now taking place on the continent of Europe. He had sown the seeds of new nationalities: in the Peninsula, when he created the Kingdom of Italy; and in Germany, when he abolished two hundred and fifty three separate states."