Thus the issue to which the events of about a century had been pointing was apparently raised; Germany was divided into two hostile parties, one set of states grouping themselves around Austria, another around Prussia. A difficulty which arose in Hesse-Cassel almost compelled the powers to bring their differences to the test of war. In this small state the liberal movement of 1848 had been followed by reaction, and the elector ventured to replace Hassenpflug, the unpopular minister who had been driven from power. Hassenpflug, being detested by the chamber, dissolved it in June 1850; but the new one was not less hostile, and refused to sanction the collection of the taxes until it had considered the budget. For this offence it also was dissolved, and orders were issued for the raising of the taxes without its consent. Many officials refused to obey; the judges remained loyal to the constitution; and when attempts were made to solve the difficulty by the army, the officers instructed to act resigned in a body. Meanwhile, Hassenpflug had appealed to the representatives in Frankfort who claimed to be the restored diet, and under the influence of Austria they resolved to support him. Prussia, on the other hand, announced its determination to carry out the principles of the Union and to maintain the Hessian constitution. Austrian and Bavarian troops having entered Hesse, a Prussian army immediately occupied Cassel, and war appeared to be imminent. Prussia, however, was wholly unprepared for war; and, when this was realized, Radowitz, the foreign minister, who had so far pursued a vigorous policy, retired, and was replaced by Manteuffel, who, although the whole Prussian army was mobilized, began by making concessions. The Union was dissolved; and after Austria had despatched an ultimatum formulating her demands, Baron Manteuffel met Prince Schwarzenberg at Olmütz, and, by a convention signed on the 29th of November 1850, virtually yielded everything he insisted upon. The difficulty in Hesse was to be left to the decision of the German governments; and as soon as possible ministerial conferences were to be held in Dresden, with a view to the settlement of the German constitution. Diet restored. The Austrian government strove to secure the appointment of a stronger executive than had hitherto existed; but its proposals met with steady opposition from Prussia. Every Prussian scheme was in like manner resisted by Austria. Thus, from the sheer inability of the assembled ministers to devise a plan on which all could agree, Prussia and the states that had joined her in the Union were compelled to recognize the Frankfort diet. From the 12th of June 1851 its sittings went on as if nothing had occurred since it was dispersed.