French demands In France, the surprise announcement of the
Convention of London signed by the other four Great Powers on July 15 was viewed as a renewal of the grand anti-French coalitions that had been victorious in 1814 and 1815. The exclusion of France was seen as a foreign policy crisis by nationalists and public opinion swung in a nationalistic direction amidst talk of a "diplomatic
Waterloo". Starting with the liberal newspaper
Le Constitutionnel on August 1, 1840, demands for a foray to the Rhine spread along with calls for territorial "compensation" for the perceived snub and the defeat of France's ally in Egypt. Similar calls quickly spread to Bonapartist and Legitimist newspapers. As had happened during the July Revolution in 1830, there were loud calls for revision of the 1815 treaties and a revival of the militant nationalism that had dominated the Revolutionary period. Although Thiers and Louis-Philippe knew France was not prepared for war, much less a war against an alliance of the four Great Powers, they also recognized that the popular outrage represented a threat to the government and the monarchy. With the king's support, Thiers resorted to a bluff: he publicly called for the restoration of the Rhine frontier and the reannexation of the Left Bank of the Rhine. In support of this demand, he called up reservists on August 5, 1840, mobilized forces near the border, he issued a government loan for armaments purposed, and began a massive
fortification project around Paris. Thiers hoped that Muhammad Ali would be able to hold out in Syria while France pressed for a renegotiated settlement.
German reaction On the German side, a similar wave of nationalist excitement arose in response. Particularly in the western states of the German Confederation, Francophobia and war hysteria were rampant in the press. Some demanded the reconquest of
Alsace and Lorraine (border regions with large German-speaking populations) from France in response. Elsewhere the response was more muted, particularly further from the border, but the power of the German nationalist idea was seen in the outcry. Just as French nationalists questioned the justice of the 1815 settlements, some Germans questioned the decision to forego significant territorial concessions from France after the Napoleonic wars, with some calls for annexing
Switzerland as well as French border fortifications. The crisis resulted in a significant shift among German liberals. Before 1840, Germany liberals were fairly Francophilic and willing to put political freedom above national unity — many had spent time in exile in France, the
French Revolution and
July Revolution were often viewed as models to be followed, and French writers and theorists were heavily influential. The Rhine crisis changed the view of France from a continental bastion of liberal parliamentarianism to focus on the militaristic and chauvinistic elements of the revolutionary spirit, turning many German liberals away from France and toward a more nationalist-liberal view, which was highly influential in the
German revolutions of 1848–1849. The weaknesses of the German military under the Confederation received significant attention. Relying on the contribution of troops, equipment, and funds from all Confederation states, coordinating the
German Federal Army was very difficult and the small states were heavily reliant on the two German Great Powers of Prussia and Austria, each of whom had their own foreign policy goals independent of the Confederation. With the weakness brought into sharp focus by France's sabre-rattling in the west, calls for further integration in the Confederation gained some strength. Some steps were taken to increase military preparedness and strengthen cooperation. The new King of Prussia,
Frederick William IV, proposed an expansion of the German Confederation's military and improvements to the fortifications of
Mainz,
Ulm, and
Rastatt, while the
Kingdom of Bavaria built the fortress at
Germersheim. Prussia and Austria also agreed to a military union in the case of a French attack. However, further moves toward German unity were not pursued by the conservative leaders and the rulers of smalls states continued to defend their independence.
Deescalation and resolution The King made it clear to Thiers that he wanted peace, a position backed by many in the Cabinet due to the poor state of military preparedness and the continuing military efforts in Algeria. Thiers offered to resign, but the king refused his resignation, arguing that he wanted the British to believe that France would fight. And indeed, the combined British and Austrian Fleets, after blockading the Nile delta, did not attack Egypt, but moved east to the ports of Syria. In September 1840, joint British, Austrian, and Ottoman forces bombarded and captured several Syrian ports from the Egyptians and Muhammad Ali's military position in the Levant became untenable. In October, the King struck several Thiers-drafted lines he deemed too confrontational from his annual address to the Chamber of Deputies and Thiers tendered his resignation again which was accepted on October 29, 1840. Thiers was succeeded by his predecessor, Marshal Soult, whose government struck a more conciliatory line with the other Great Powers, dropping any demand for territorial concession in Europe and actively seeking to rejoin the
Concert of Europe. Despite overwhelming military superiority, the Great Powers declined to depose Muhammad Ali in Egypt and while the settlement revoked his earlier gains in Syria and reduced his army and navy, it reaffirmed his position in Egypt and made it hereditary, though subject to the Ottoman throne. The new cabinet, with Guizot as Secretary of State, sailed a more conciliatory course, and all five Great Powers signed the
London Straits Convention (13 July 1841) settled the matter of the Dardanelles, defusing tension in Europe. ==Consequences and significance==