The Kings and Princes discussed the proposals in secret session. They enjoyed this unaccustomed freedom; for the first time they had been able to discuss the affairs of their own country without the intervention of their Ministers. The Ministers had, of course, come to Frankfort, but they found themselves excluded from all participation in affairs. With what admiration and jealousy must they have looked on Bismarck, but there was none of them who had done for his Prince what Bismarck had for the King of Prussia.

Perhaps it was his intention at once to press forward the struggle with Austria for supremacy in Germany. If so, he was to be disappointed. A new difficulty was now appearing in the diplomatic world: the Schleswig-Holstein question, which had been so long slumbering, broke out into open fire, and nearly three years were to pass before Bismarck was able to resume the policy on which he had determined. Men often speak as though he were responsible for the outbreak of this difficulty and the war which followed; that was far from being the case; it interrupted his plans as much as did the Polish question. We shall have to see with what ingenuity he gained for his country an advantage from what appeared at first to be a most inconvenient situation.

We must shortly explain the origin of this question, the most complicated that has ever occupied European diplomacy.

The Duchy of Holstein had been part of the German Empire; for many hundreds of years the Duke of Holstein had also been King of Denmark; the connection at first had been a purely personal union; it was, however, complicated by the existence of the Duchy of Schleswig. Schleswig was outside the Confederation, as it had been outside the German Empire, and had in old days been a fief of the Kingdom of Denmark. The nobles of Holstein had, however, gradually succeeded in extending German influence and the German language into Schleswig, so that this Duchy had become more than half German. Schleswig and Holstein were also joined together by very old customs, which were, it is said, founded on charters given by the Kings of Denmark; it was claimed that the two Duchies were always to be ruled by the same man, and also that they were to be kept quite distinct from the Kingdom of Denmark. These charters are not undisputed, but in this case, as so often happens in politics, the popular belief in the existence of a right was to be more important than the legal question whether the right really existed.

The trouble began about 1830. There was a double question, the question of constitution and the question of inheritance. The Danes, desirous to consolidate the Monarchy, had neglected the rights of the old local Estates in the Duchies; this led to an agitation and a conflict. It was a struggle for the maintenance of local privileges against the Monarchy in Copenhagen. Moreover, a vigorous democratic party had arisen in Denmark; their object was to incorporate the whole of Schleswig in the Danish Monarchy; they did not care what happened to Holstein. This party were called the Eider Danes, for they wished Denmark to be extended to the Eider. Against this proposed separation of the two Duchies violent protests were raised, and in 1848 a rebellion broke out. This was the rebellion which had been supported in that year by Prussia, and it had the universal sympathy of everyone in Germany, Princes and people alike.

The question of constitution was complicated by one of succession. The male line of the Royal House which ruled in Denmark was dying out; according to a law introduced in 1660, descendants of the female branch might succeed in the Kingdom. This law had probably never been legally enacted for the Duchies; in Schleswig and Holstein the old Salic law prevailed. In the ordinary course of things, on the death of Frederick VII., who had succeeded in 1847, the long connection between Holstein and Denmark would cease. Would, however, Schleswig go with Holstein or with Denmark? Every Schleswig-Holsteiner and every German declared that the two Duchies must remain for ever "unvertheilt"; the majority of the Danes determined, whatever the law might be, that they would keep Schleswig, which had once been Danish. The King took a different line; he wished to maintain all the possessions in his House, and that the same man should succeed both in the Kingdom and the Duchies. There was no authority qualified to decide the legal question; and therefore the question of right was sure to become one of power. At first, strange as it may seem, the power was on the side of the Danes. Germany was weak and disunited, the Prussian troops who had been sent to help the rebellion were withdrawn, and the surrender of Olmütz was fatal to the inhabitants of the Duchies. The whole question was brought before a European Congress which met at London. The integrity of the Danish Monarchy was declared to be a European interest; and the Congress of the Powers presumed to determine who should succeed to the ducal and royal power. They chose Christian of Glucksburg, and all the Powers pledged themselves to recognise him as ruler over all the dominions of the King of Denmark.

Prussia and Austria were among the Powers who signed the Treaty of London, but the Diet of Frankfort was not bound by it. At the same time, Denmark had entered into certain engagements pledging itself to preserve the separation between Schleswig-Holstein and Denmark, and also not to oppress the German people in Schleswig. The Danes did not keep their engagement; despising the Germans, they renewed the old policy, attempted to drive back the German language, and introduced new laws which were inconsistent with the local privileges of Holstein and Schleswig. The Holstein Estates appealed for protection to the Diet. The Germans protested, but the Danes were obstinate. As years went on, the excitement of the Germans grew; they believed, and justly believed, that it was a matter of honour to defend the rights of the Duchies. Schleswig-Holstein was the symbol of German weakness and disgrace, and in defence of them the national enthusiasm was again roused.

With this popular enthusiasm Bismarck had no sympathy; and he had no interest for the cause of Schleswig-Holstein. He had originally considered the inhabitants merely as rebels against their lawful sovereign. He had learnt at Frankfort sufficient to make this indifferent to him, but he still regarded them as foreigners and looked on their claims merely from the point of view of Prussian interests. Both his sympathy and his reason led him in fact rather to take the Danish side. "The maintenance of Denmark is in our interest," he wrote in 1857, but Denmark could only continue to exist if it were ruled, more or less arbitrarily, with provincial Estates as it has been for the last hundred years; and in another letter: "We have no reason to desire that the Holsteiners should live very happily under their Duke, for if they do they will no longer be interested in Prussia, and under certain circumstances their interest may be very useful to us. It is important that, however just their cause may be, Prussia should act with great prudence." He recognised that if the complaints of the Duchies led again to a war between Germany and Denmark all the loss would fall on Prussia; the coast of Prussia was exposed to the attacks of the Danish fleet. If the war was successful, the result would be to strengthen the Diet and the Federal Constitution; and, as we know, that was the last thing which Bismarck desired; if it failed, the disgrace and the blame would fall upon Prussia.

The only thing which would have induced him warmly to take up the cause was the prospect of winning the Duchies for Prussia, but of that there seemed little hope.

So long, therefore, as he remained at Frankfort, he had endeavoured to keep the peace, and he continued this policy after he became Minister. The greater number of the German States wished to carry out a Federal execution in Holstein; he tried to avert this and warmly gave his support to Lord Russell in his attempt to settle the question by English mediation. His efforts, however, were unavailing, for the Danish Government, presuming on the weakness of Germany, continued their provocative action. On March 30, 1863, a new Constitution was proclaimed, completely severing Holstein from the rest of the Monarchy. The Holstein Estates had not been consulted and appealed to the Diet for protection; the law of the Federation enabled the Diet in a case like this to occupy the territory of the offending sovereign in order to compel him to rule according to the Constitution. The national German party wished to go farther, to confuse the questions of Schleswig and of Holstein, and so bring about a war with Denmark. Bismarck wrote to the Duke of Oldenburg to explain his objections to this: it would make the worst impression in England; and he insisted that they should attempt nothing more than Federal execution in Holstein. As Holstein belonged to the Federation, this would be a purely German affair and no ground would be given for interfering to England or France. In consequence, the simple execution in Holstein was voted. Even now, however, Bismarck did not give up hopes of keeping peace. He brought pressure to bear on the Danes and was supported by England. If only they would withdraw the proclamation of March 30th, and accept English mediation for Schleswig, he promised them that he would use all his influence to prevent the execution and would probably be successful.