The foreign policy of France under the July Monarchy from 1830 to 1840 was characterized by two primary elements: a new system of alliances, notably the rapprochement with the United Kingdom within the "Entente Cordiale," and the French conquest of Algeria. This policy aimed to maintain peace with European neighbors, as summarized by Casimir Perier's statement: "peace without compromising honor."
Recognition of the new regime by foreign powers The July Revolution of 1830 in France caused concern among European powers, who feared a resurgence of revolutionary fervor similar to that following Napoleon's return from Elba in 1815. This concern led to a united front among European monarchies against the perceived threat of a republican France, particularly as vocal republican factions in France expressed a desire to avenge the defeat at Waterloo.When the Duke of Orléans met republican leaders at the Palais-Royal on , one of them, , stated: "It is a national revolution. The sight of the tricolor flag is what stirred the people, and it would certainly be easier to push Paris towards the Rhine than towards Saint-Cloud." (cited by .) However, France in 1830 lacked the capacity to engage in a major conflict with European powers. The economic crisis had strained finances, and the army was weakened: key forces had been deployed to Greece and Algeria,According to Bugeaud, France could field at most 40,000 men. In 1832, Louis-Philippe remarked: "We had then seventy-eight thousand men, including the army in Algiers, no more." (cited by .) and the revolution had disrupted military discipline.
Thiers argued to Adélaïde d'Orléans on that foreign powers would likely view the new monarchy as a means to prevent a republic and contain internal agitation, provided it did not expand beyond France's borders. The accession of Louis-Philippe, constrained by legitimacy issues and focused on peace with neighbors, was seen as advantageous by European powers, who had grown wary of Charles X's independent actions.France had undertaken military expeditions to Spain, Greece, and Algeria, and had begun to align with Russia, raising concerns in the United Kingdom. As Guy Antonetti observed: "The European sovereigns pretended to regret Charles X, but they recognized Louis-Philippe!".
Upon ascending the throne, Louis Philippe I prioritized obtaining recognition from foreign powers. After confirming that Charles X and his family had left France on 19 August, the king sent letters to European monarchs via personal emissaries,The , aide-de-camp to the Duke of Orléans, who had accompanied Louis-Philippe and his son to the United Kingdom in 1829, was sent to London. General Belliard was dispatched to Vienna, General Atthalin to Saint Petersburg, General Mouton to Berlin, and the Prince of Moskowa to Copenhagen. justifying the regime change and notifying them of the new reign. The letters described the July Revolution as an unavoidable event and expressed the king's regret for the "misfortunes" of the elder branch of his family. Louis-Philippe emphasized that he had reluctantly accepted the throne to prevent anarchy in France.The publication of one such letter drew criticism from the left-wing press, which accused the king of seeking "grace" from foreign sovereigns for France's actions (cited by ).
The United Kingdom, having grown frustrated with Charles X, welcomed the new monarchy, particularly given the Duke of Orléans' pro-British stance. Before receiving Louis-Philippe's letter, British Foreign Secretary Lord Aberdeen informed Metternich that the UK would remain neutral regarding France's political changes, provided France maintained stability. On 31 August, British ambassador Charles Stuart presented his letters of credence to Louis-Philippe, and on 3 September, Talleyrand was appointed ambassador to London. The UK's neutrality, signaling a break from the Holy Alliance, ensured that European powers would not interfere in French affairs.
In Austria, Emperor Francis I expressed disapproval of the events in France but recognized the July Monarchy on 5 September after assurances that the new regime would respect the 1815 treaties and not pursue territorial expansion. Austria's ambassador, Count Apponyi, presented his credentials to Louis-Philippe on 24 October.Apponyi's nephew, Rodolphe, noted in his journal that the king appeared pleased to receive an ambassador from a major power, while the queen was visibly emotional (cited by ). A week later, a dinner was held at the Palais-Royal in honor of the Austrian ambassador.
Prussia's King Frederick William III followed Austria's lead in recognizing the new regime. Similarly, the July Monarchy received recognition from Spain's Ferdinand VII, whose ambassador presented credentials on 13 October, as well as from the kings of Sardinia and Denmark.
Russia's Emperor Nicholas I was less accommodating, though his ambassador in Paris, Pozzo di Borgo, had supported the July Revolution. Nicholas I, sensitive to issues of legitimacy due to his own ascension, recognized Louis-Philippe's government but used formal language that implied a lack of full sovereign recognition.While Louis-Philippe's letter addressed Nicholas as "Monsieur mon frère," Nicholas's response used "Sire" and expressed "high consideration" rather than friendship. Louis-Philippe noted the omission of "esteem" and "friendship," and the use of "Nicolas" instead of a more formal signature (cited by ). Relations normalized in 1831 after the appointment of the Duke of Mortemart as ambassador to Saint Petersburg, but remained cool.After the Fieschi assassination attempt on , Nicholas I was the only European monarch not to send a message of sympathy to Louis-Philippe.
In Portugal, Dom MiguelUpon the death of John VI of Portugal in 1826, his son Dom Pedro, already Emperor of Brazil, left the Portuguese crown to his daughter Maria II under the regency of his uncle, Dom Miguel. In 1828, Miguel deposed Maria and proclaimed himself king. ignored the new French regime. In response, France sent Admiral Roussin's squadron, which forced the Tagus on 11 July 1831 and compelled Portugal to accept French conditions on 14 July. In July 1833, Dom Pedro, supported by the British fleet, deposed Miguel and established a liberal regime, which Paris and London immediately recognized. The Duke of Modena, Francis IV, refused to recognize the July Monarchy, reflecting his hostility toward Louis-Philippe, despite familial ties through the king's maternal lineage.Louis-Philippe's maternal grandmother was Maria Teresa Felicitas d'Este, and his mother, Maria Beatrice d'Este, was Duchess of Modena. He descended from Princess Charlotte Aglaé d'Orléans, daughter of the Regent. Francis IV, a member of the House of Habsburg-Lorraine, refused to receive Louis-Philippe's letters (cited by ). Modena never recognized the July Monarchy, and the legitimist pretender, the "Count of Chambord," married a princess from Modena in 1846.
By the end of , Louis-Philippe had secured recognition from all European powers by pledging to respect the 1815 borders and positioning his regime as a safeguard against anarchy in France.
July Monarchy and Troubles European monarchies recognized the July Monarchy as a bulwark against republicanism and the spread of revolutionary ideas. Their support was contingent on France maintaining internal stability and not exporting revolution. However, disturbances in Belgium, Poland, and Italy soon challenged the new regime.
Belgium Occupied by French revolutionary armies in 1794 and annexed in 1795, the , or Belgian provinces, were separated from France in 1814. The Congress of Vienna in 1815 united them with the former United Provinces to form the Kingdom of the Netherlands under the House of Nassau.In exchange, the House of Nassau ceded the Dutch colonies of the Cape and Ceylon to the United Kingdom. The UK financed fortresses along the French border to prevent French expansion.
Belgian Revolution Dissatisfaction with William I of the Netherlands's rule led to unrest in Belgium by the late 1820s. On , Brussels rose in rebellion, and Belgian militias halted Dutch troops on 27 September, pushing them back to the former border of the Austrian Netherlands. On 4 October, Belgium proclaimed independence, and a provisional government was formed, including Catholics Félix de Mérode and and liberals Alexandre Gendebien and Charles Rogier.
In France, nationalist and revanchist factions saw the Belgian uprising as an opportunity to reclaim what was considered a lost French province. They advocated for military intervention, supported by liberal Catholics, patriots like Armand Carrel, republicans like Godefroy Cavaignac, Bonapartists like General Lamarque, and the petty bourgeoisie aligned with the "movement party" of Laffitte and Thiers.
However, such intervention risked provoking Prussian support for the Dutch king, who was the brother-in-law of Frederick William III. Prussia, having acquired Rhine territories in 1815, feared that French intervention in Belgium could lead to further territorial claims.
Independent Belgium Louis-Philippe, following the policy of Louis XV in 1748, rejected the idea of reclaiming Belgium, as it would be unacceptable to the United Kingdom, which opposed French control over the Scheldt estuary. By reassuring the UK, Louis-Philippe sought support for a neutral Belgian state under European guarantee.. This approach also aimed to dismantle the fortified "barrier" established by the UK along the Belgian border.
The King of the French first informed Prussia and Russia that France would not intervene in Belgium but would not tolerate intervention by other powers. On 31 August, Foreign Minister Molé conveyed this to the Prussian ambassador, and the king told the Russian ambassador, Pozzo di Borgo: "If the Prussians enter Belgium, it is war, for we will not tolerate it." This introduced the "principle of non-intervention." Talleyrand then proposed to the UK that France renounce Belgium in exchange for its neutrality. The British government agreed and suggested discussing the Belgian question at the conference of the five powers (UK, Austria, Prussia, Russia, and France) in London, originally convened for Greek affairs.
The Belgian provisional government convened a National Congress, which decided in late that Belgium would be a constitutional monarchy and excluded members of the House of Nassau from the throne. However, the London powers considered installing the Prince of Orange, son of the King of the Netherlands, to minimize disruption to the 1815 treaties.
The Tory government of Wellington, committed to the 1815 treaties, was replaced on 22 November by a Whig government under Lord Grey, with Lord Palmerston as Foreign Secretary, who was more flexible. Additionally, the Russian army was occupied with the Polish uprising that began on , preventing support for William I. Palmerston and Talleyrand then directed the London conference, which imposed an armistice on the Dutch and Belgians, recognized Belgium's independence (20 December), and declared Belgium a perpetually neutral state under the powers' guarantee. However, the conference awarded the King of the Netherlands control over Luxembourg and Limburg (), which the Belgians contested, leading to further conflict.
Starting in late , the Belgians sought a king. Louis-Philippe noted to Marshal Maison on 11 November that the Belgian National Congress resembled the 1790 assembly under Vandernoot and Van Enpen, being largely aristocratic and clerical. This made it unlikely for a Protestant prince to be elected.