During the long weeks at Versailles, Bismarck was much occupied with German affairs. The victory of Sedan was the foundation of German unity; Bismarck's moderation and reserve now earned its reward; he had always refused to press the southern States into the Federation; now the offer to join came from them. Baden asked, as she had already done at the beginning of the year, to be received into the Union; the settlement with Wurtemberg, and above all with Bavaria, was less simple. At the request of the Bavarian Government Delbrück was sent to Munich for an interchange of opinion, and the negotiations which were begun there were afterwards continued at Versailles and Berlin. There were many difficulties to be overcome: the Bavarians were very jealous of their independence and were not prepared to put themselves into the position which, for instance, Saxony occupied. But the difficulties on the Prussian side were equally great: the Liberal party wished that the Constitution should be revised and those points in it which they had always disliked altered; they would have made the government of the Federal authorities more direct, have created a Federal Ministry and a Federal Upper House, and so really changed the Federation into a simple State, thereby taking away all the independence of the dynasties. It was quite certain that Bavaria would not accept this, and there was some considerable danger that their exaggerated demands might lead to a reaction in South Germany. Probably under any circumstances the unification of Germany would have been completed, but it required all Bismarck's tact to prevent the outbreak of a regular party struggle. The most extreme line was taken by the Crown Prince of Prussia; he desired the immediate creation of an emperor who should have sovereign authority over the whole of Germany, and he even went so far as to suggest that, if the Bavarians would not accept this voluntarily, they might be compelled to do so. He had repeated conversations with Bismarck on this, and on one occasion at least it ended in an angry scene. The Crown Prince wished to threaten the South Germans. "There is no danger," he said; "let us take a firm and commanding attitude. You will see I was right in maintaining that you are not nearly sufficiently conscious of your own power." It is almost incredible that he should have used such language, but the evidence is conclusive; he was at this time commanding the Bavarian troops against the French; Bavaria had with great loyalty supported Prussia through the war and performed very valuable services, and now he proposed to reward their friendship by compelling them to accept terms by which the independence of the King and the very existence of the State would be endangered. The last request which the King of Bavaria had sent to the Crown Prince as he left Munich to take command of the Bavarian army was that nothing might be done to interfere with Bavarian independence.