Editing Concert of Europe (section)

== First phase ==
The first phase of the Concert of Europe is typically described as beginning in 1814 with the Congress of Vienna, and ending in the early 1860s with the Prussian and Austrian invasion of Denmark.<ref name=":42">{{cite web|url=https://ehne.fr/en/article/europe-europeans-and-world/organizing-international-system/concert-europe|title=Concert of Europe (The) {{!}} EHNE|website=ehne.fr|access-date=2019-10-17}}</ref> This first phase included numerous congresses, including the Congress of Paris in 1856 which some scholars argue represented the apex of the Concert of Europe in its ending of the Crimean War.<ref name=":42" /> At first, the leading personalities of the system were British foreign secretary [[Robert Stewart, Viscount Castlereagh|Lord Castlereagh]], Austrian chancellor and foreign minister [[Klemens von Metternich]], and Emperor [[Alexander I of Russia]]. [[Charles Maurice de Talleyrand-Périgord]] of France was largely responsible for quickly returning the country to its place alongside the other major powers in international diplomacy.

=== The Holy Alliance within the Concert===
[[File:Declaration of victory after the Battle of Leipzig, 1813 (by Johann Peter Krafft).jpg|thumb|''[[The Declaration of Victory After the Battle of Leipzig]]'' by [[Johann Peter Krafft]], 1839. [[Alexander I of Russia|Alexander I]] of Russia, [[Francis II, Holy Roman Emperor|Francis I]] of Austria and [[Frederick William III of Prussia|Frederick III]] of Prussia after the [[Battle of Leipzig]], 1813]]
The [[Kingdom of Prussia]], and the [[Austrian Empire|Austrian]] and [[Russian Empire]]s, formed the [[Holy Alliance]] on 26 September 1815, with the express intent of preserving Christian social values and traditional monarchism.<ref>{{Cite CE1913|url=http://www.newadvent.org/cathen/07398a.htm |title=Spahn, M. (1910). Holy Alliance |access-date=2011-05-21}}</ref> Only three notable princes did not sign: [[Pope Pius VII]] (it was not Catholic enough), Sultan [[Mahmud II|Mahmud II of the Ottoman Empire]] (too Christian), and the [[George IV of the United Kingdom|British Prince Regent]] because his government was a constitutional monarchy with a more liberal political philosophy and did not wish to pledge itself to the policing of continental Europe.<!--[acc to d.thompson]-->

Britain did ratify the [[Quadruple Alliance (1815)|Quadruple Alliance]], signed on 20 November 1815, the same day as the [[Treaty of Paris (1815)|Second Treaty of Paris]] was signed, which later became the [[Quintuple Alliance]] when France joined in 1818 with the Treaty of Aix-la-Chapelle.<ref>{{cite book |last=Chapman |first=Tim |year=2006 |title=The Congress of Vienna 1814–1815 |publisher=Routledge |isbn=978-1134680504 |page=[https://books.google.com/books?id=Wn0G5na-1j0C&pg=PA60 60] }}</ref><ref name=":02">{{cite web|url=https://www.rand.org/content/dam/rand/pubs/perspectives/PE200/PE226/RAND_PE226.pdf|title=The Concert of Europe and Great-Power Governance Today|last=Lascurettes|first=Kyle|date=2017|website=RAND Corporation|access-date=October 17, 2019}}</ref>

There has been much debate between historians as to which treaty was more influential in the development of international relations in Europe in the two decades following the end of the Napoleonic Wars. In the opinion of historian Tim Chapman, the differences are somewhat academic as the powers were not bound by the terms of the treaties and many of them intentionally broke the terms if it suited them.{{sfn|Chapman|2006|p=60}}
[[File:Johann Peter Krafft - Der Einzug von Kaiser Franz I. in Wien nach dem Pariser Frieden am 16. Juni 1814 - 6247 - Österreichische Galerie Belvedere.jpg|thumb|''[[The Entry of Emperor Francis I into Vienna After the Peace of Paris]]'' by [[Johann Peter Krafft]].]]
The Holy Alliance was an informal alliance led by Russia, Austria, and Prussia which aimed to reduce the influence of secularism and liberalism in Europe. The brainchild of Tsar Alexander I, it gained at least nominal support from many states, partly because most European monarchs did not wish to offend the Tsar by refusing to sign it, and as it bound monarchs personally rather than their governments, it was sufficiently vague to be functionally ignored once signed. In the opinion of Lord Castlereagh, the British foreign secretary at the time of its inception, the Holy Alliance was "a piece of sublime mysticism and nonsense".{{sfn|Chapman|2006|p=60}} Nevertheless, its influence was more long lasting than its contemporary critics expected and was revived in the 1820s as a tool of repression when Britain and France refused to embroil themselves in certain continental matters.{{sfn|Chapman|2006|p=61}}

The Quadruple Alliance, by contrast, was a standard treaty, and the great powers did not invite any minor allies to sign it. The primary objective was to bind the signatories to support the terms of the Second Treaty of Paris for 20 years. It included a provision for the High Contracting Parties to "renew their meeting at fixed periods...for the purpose of consulting on their common interests" which were the "prosperity of the Nations, and the maintenance of peace in Europe".{{sfn|Chapman|2006|p=62}} However, the wording [[s:Quadruple Alliance#ART.VI|Article VI]] of the treaty did not specify what these "fixed periods" were to be and there were no provisions in the treaty for a permanent commission to arrange and organise the conferences. This meant that instead of meeting at "fixed periods" the meetings were arranged on an ad hoc basis, to address specific threats or disputes.{{sfn|Chapman|2006|pp=61–62}}

===Congress System===
The "Congress System" was an effort to maintain peace and stability in Europe through regular Congresses of the great powers, similar to the [[Congress of Vienna]], to address pressing issues and resolve disputes through negotiation and coordinated action. The system of regular formal Congresses was short-lived, primarily due to the refusal of Great Britain to take part due to ideological and strategic differences with the Holy Alliance powers.

==== 1814 Congress of Vienna ====
{{Main|Congress of Vienna}}
[[File:Bilderrevolution0271.jpg|thumb|Negotiations at the Congress of Vienna]]
The Concert of Europe began with the 1814–1815 Congress of Vienna, which was designed to bring together the "major powers" of the time in order to stabilize the [[geopolitics]] of Europe after the defeat of Napoleon in 1813–1814, and contain France's power after the war following the French Revolution.<ref name=":1">{{cite web|url=https://opil.ouplaw.com/page/congress-vienna-1814-1815|title=The Congress of Vienna (1814–1815)|website=Oxford Public International Law |language=en|access-date=2019-10-17}}</ref> The Congress of Vienna took place from November 1814 to June 1815 in Vienna, Austria, and brought together representatives from over 200 European polities.<ref name=":1" /> The Congress of Vienna created a new international world order which was based on two main ideologies: restoring and safeguarding power balancing in Europe; and collective responsibility for peace and stability in Europe among the "Great Powers".<ref name=":1" />

==== 1818 Congress of Aix-la-Chapelle ====
{{Main|Congress of Aix-la-Chapelle (1818)}}
The 1818 Congress of Aix-la-Chapelle formed the Quintuple Alliance by adding France to the Quadruple Alliance, which had comprised the United Kingdom, Austria, Prussia, and Russia.<ref name=":0">{{cite web|url=https://www.rand.org/content/dam/rand/pubs/perspectives/PE200/PE226/RAND_PE226.pdf|title=The Concert of Europe and Great-Power Governance Today|last=Lascurettes|first=Kyle|date=2017|website=RAND Corporation|access-date=October 17, 2019}}</ref> The ability for this to happen was given by Article V of the Quadruple Alliance, and resulted in ending the occupation of France.<ref>{{cite web|url=https://opil.ouplaw.com/page/congress-of-aachen|title=The Congress of Aachen [Aix-la-Chapelle] (1818) and the Completion of the Vienna System |website=Oxford Public International Law |language=en|access-date=2019-10-21}}</ref>

==== 1820 Congress of Troppau ====
{{Main|Congress of Troppau}}
The 1820 Congress of Troppau was held in Troppau, Austria by the great powers of the Quintuple Alliance (Russia, Prussia, Austria, France, and the United Kingdom) to discuss and put down the liberal uprising in Naples that caused King Ferdinand I to agree to a constitutional monarchy – which was seen by Prussia and Austria as a threat of liberalism.<ref>{{cite web|url=https://erc-secure-db.sites.uu.nl/conference/congress-of-troppau/|publisher=Utrecht University |title=Congress of Troppau (1820)|website=erc-secure-db|language=en-US|access-date=2019-10-21}}</ref> Other powers present at this Congress include Spain, Naples, and Sicily.<ref name=":0" /> At this Congress, the Troppau Protocol was signed, which stated that if States which have undergone a change of government due to a revolution threaten other States, then they are ''ipso facto'' no longer members of the European Alliance if their exclusion will help to maintain legal order and stability. Furthermore, the Powers of the Alliance would also be bound to peacefully or by means of war bring the excluded State back into the Alliance.<ref name=":0" />

==== 1821 Congress of Laibach ====
{{Main|Congress of Laibach}}
The 1821 Congress of Laibach took place in Laibach (now [[Ljubljana]], [[Slovenia]]), between the powers of the Holy Alliance (Russia, Prussia, and Austria) in order to discuss the Austrian invasion and occupation of Naples in order to put down the Neapolitan Revolution of 1820 which had forced the King to accept a constitution.<ref name=":2">{{cite web|url=https://www.britannica.com/event/Congress-of-Laibach|title=Congress of Laibach {{!}} European history|website=Encyclopedia Britannica|language=en|access-date=2019-10-21}}</ref> Other powers present at this Congress include Naples, Sicily, the United Kingdom, and France.<ref name=":0" /> The Congress of Laibach represented beginning tensions within the Concert of Europe, between the Eastern powers of Russia, Prussia, and Austria, versus the Western powers of Britain and France.<ref name=":2" />

==== 1822 Congress of Verona ====
{{Main|Congress of Verona}}
The 1822 Congress of Verona took place in Verona, Italy, between the powers of the Quintuple Alliance (Russia, Prussia, Austria, France, and the United Kingdom), along with Spain, Sicily, and Naples.<ref name=":0" /> This Congress dealt with the question of Spanish revolution of 1820; Russia, Prussia, and Austria agreed to support [[Hundred Thousand Sons of Saint Louis|France's planned intervention in Spain]], while the United Kingdom opposed it.<ref name=":3">{{cite web|url=http://www.historydiscussion.net/world-history/europe/history-of-the-concert-of-europe-1815-22-world-history/1426|title=History of The Concert of Europe (1815–22)|date=2014-03-06|website=History Discussion|language=en-US|access-date=2019-10-23}}</ref> This Congress also looked to deal with the [[Greek War of Independence|Greek Revolution]] against Turkey, but due to the opposition of the United Kingdom and Austria to Russian intervention in the Balkans, the Congress of Verona did not end up addressing this issue.<ref name=":3" />

===Collapse of the Congress System===
====Protocol of St. Petersburg (1826)====
{{Main|Protocol of St. Petersburg (1826)}}
[[File:Entrevue du général Maison et d'Ibrahim Pacha, à Navarin, septembre 1828.jpg|thumb|[[Nicolas Joseph Maison|General Maison]] meeting [[Ibrahim Pasha of Egypt|Ibrahim Pasha]] in [[Pylos|Navarino]] in September 1828]]
The Protocol of St. Petersburg is often cited as the end of the Congress System, as it represented the failure of the Congress of St. Petersburg (1825) to resolve the question of the [[Greek War of Independence]] against the Ottomans. Russia, seeking territory and influence in the Black Sea and the Balkans, and to protect the Eastern Orthodox Christians under Muslim Ottoman rule, supported Greek independence and was dissatisfied with other Powers' desire to treat the uprising as an internal matter and support for the status quo. Russia and the United Kingdom entered a bilateral agreement to enforce their plan, by war if necessary, for a mediated end to the conflict with Greek autonomy within the Ottoman Empire. The other great powers were not consulted in this Protocol and though France later joined, Austria and Prussia opposed the Protocol and the threat it posed to the conservative, anti-nationalist stability they sought to impose on Europe. The Ottomans also rejected the Protocol until their defeat at the [[Battle of Navarino]] at the hands of the British, French, Russian, and Greek forces forced them to the negotiating table.

==== 1830 London Conference ====
{{Main|London Conference of 1830}}
The London Conference of 1830 dealt with the question of the Belgian–Dutch conflict, which was caused by the 1830 [[Belgian Revolution]] where Belgium separated from the Kingdom of the Netherlands.<ref name=":0" /> Austria, Prussia, and Russia saw Belgium's separation as a threat to stability, inviting further revolutions and revolts, and sought to return to the status quo ante. On the other hand, France, now led by the more liberal [[July Monarchy]] as a result of its own [[July Revolution|1830 revolution]], supported Belgium's independence, as much of the impetus came from the lack of power of the Francophone and Catholic residents.  The United Kingdom was very wary of French plans to annex parts of Belgium, but when no powers were willing to send troops to support the Dutch, and with the ascension of a more liberal [[Whig government, 1830–1834|Whig government]], eventually supported the creation of an independent, neutral Belgium as a buffer state, to which the other Great Powers ultimately agreed.<ref>{{cite web|url=https://encyclopedia2.thefreedictionary.com/London+Conference+of+1830-31|title=London Conference of 1830–31|website=TheFreeDictionary.com|access-date=2019-10-31}}</ref>{{better source needed|reason=A dictionary isn't a very reliable source for any specialist topic|date=February 2020}}

====Oriental Crisis (1840)====
{{Main|Oriental Crisis of 1840}}
The Ottoman Empire faced an internal revolt in the 1830s led by the viceroy of Egypt, [[Muhammad Ali of Egypt|Muhammad Ali Pasha]], who sought to create an empire and remove Egypt and Sudan of Ottoman suzerainty. Muhammad Ali's demand for control of parts of the [[Levant]] and subsequent invasion of Syria threatened to topple the weak Ottoman regime and brought the issue to a head in what became known as the [[Oriental Crisis of 1840]]. The Ottomans were supported by Austria, Britain, Prussia, and Russia who sought stability and continuity. France, however, supported Muhammad Ali, a longtime ally in North Africa, hoping to further increase French influence in the Mediterranean through a French-aligned independent Egypt. However, the other four powers agreed in the [[Convention of London (1840)]] to act without France. A joint British-Austrian force attacked Egyptian forces and forced Muhammad Ali to accept the Ottoman terms. France threatened war on behalf of Egypt and tried to seek territorial compensation in Europe by reclaiming the [[Left Bank of the Rhine]] leading to the [[Rhine Crisis]]. However, within a few months, the bellicose French government lost support and the Prime Minister [[Adolphe Thiers]] resigned and France's new government fell into step with the other great powers. The Oriental Crisis showed that important political questions would still be decided by the great powers; but it also illustrated the destabilizing effect the continued weakening of the Ottoman Empire (the so-called [[Eastern Question]]) had on the balance of power. The sabre-rattling triggered several powers to embark on the most significant armament and fortification projects since Napoleon, particularly in France and the German Confederation.

===Decline of the first phase===
====Revolutions of 1848====
{{Main|Revolutions of 1848}}
The Concert was challenged by the Revolutions of 1848 but was ultimately successful in preventing major changes to the map of Europe. However, the revolts, which combined nationalist and liberal ideas, posed a real threat to the conservative order that had reigned since 1815, as shown by the success of the French uprising ending the [[July Monarchy]] and ushering in the [[French Second Republic|Second Republic]]. However, in response, Austria, Prussia, Russia, and even republican France worked – and in some cases coordinate closely – to defeat the uprisings in Germany, Italy, and Eastern Europe. Britain also sought to preserve the status quo, providing no support to the revolutionaries, and mainly seeking to ensure that no other powers managed to leverage the uprisings into expanded influence in areas of British interest, such as the Mediterranean and the Low Countries.

====Crimean War and the 1856 Congress of Paris====
{{Main|Crimean War|Congress of Paris (1856)}}
[[File:Edouard Dubufe Congrès de Paris.jpg|thumb|Diplomats assembled at Congress of Paris. ''[[The Congress of Paris]]'' by [[Édouard Dubufe|Edouard Dubufe]]]]
Sometimes viewed as the end of the first phase, the next blow to the Concert was the [[Crimean War]], the first war between Great Powers since Napoleon. However, the war was marked by being geographically limited to the [[Crimea]] and [[Danubian Principalities]] rather than a general European war, numerous peace overtures, and serial efforts by the great powers to find a diplomatic solution. The war also illustrated a key piece of the balance of power theory, when the combined efforts of several great powers were marshaled to check the ambitions of a single rival to prevent it becoming too powerful.

The war ended in 1856 with the [[Congress of Paris (1856)|Congress of Paris]], which is sometimes viewed as the pinnacle of the Concert with all outstanding issues surrounding the conflict resolved in a single Congress and resulting in a single treaty.

====Wars of national unification====
{{Main|Unification of Italy|Unification of Germany}}
[[File:Yvon Bataille de Solferino Compiegne.jpg|thumb|[[Napoleon III]] with the French forces at the [[Battle of Solferino]], which secured the [[Kingdom of Lombardy–Venetia|Austrian withdrawal from Italy]]]]
The next war between great powers came just three years later in 1859, with what became known as the [[Second Italian War of Independence]]. The war was fought between France and Piedmont-Sardinia on the one hand and Austria on the other and resulted in a swift defeat for the Austrians. Lasting only two months and resulting mainly in the transfer of lands to a minor Italian power (Piedmont Sardinia), the war also did not result in a general European war but the transfer of European territory from a great power was unprecedented during the Concert period and presaged the coming decade of wars of national unity which would reshape Europe.

The decline of the Concert was further highlighted by the failure of a ceasefire in 1864 over the issue of Prussia's and Austria's invasion of Denmark in the [[Second Schleswig War]].<ref>{{cite web|url=https://www.icrc.org/en/doc/resources/documents/misc/57jnvu.htm|title=The German-Danish war (1864) – ICRC|date=1998-04-06|website=www.icrc.org|language=en-us|access-date=2019-10-23}}</ref> As the growth of nationalism led to dissatisfaction with the rule of the Danish crown over ethnically German [[Holstein]] and ethnically mixed [[Schleswig]], the German populations of the provinces revolted in 1848 but the threat of intervention by the other major powers prevented the German great powers (Prussia and Austria) from intervening and the [[First Schleswig War]] ended in a restoration of the status quo ante. However, by 1863, when a succession crisis caused Denmark to breach the terms of the treaty and attempt to incorporate Schleswig into Denmark, the German powers, Austria and Prussia, responding to national sentiment across the [[German Confederation]] and with the excuse that Denmark had violated the existing treaties, both opposed a negotiated settlement.<ref name=":42"/> The efforts of the other Powers, primarily Britain, France and Russia at the [[London Conference of 1864]] failed.  The collapse of the Concert was further sealed when the war was concluded with a trilateral treaty between Prussia, Austria, and Denmark rather than a larger Congress involving the other Great Powers.
[[File:Schlacht-bei-koeniggraetz-von-georg-bleibtreu.jpg|thumb|Prussian King [[William I, German Emperor|Wilhelm I]] and [[Otto von Bismarck]] watching the [[Battle of Königgrätz]], 1866]]
The Second Schleswig War set the stage for the subsequent wars of [[Unification of Germany|German unification]] (the [[Austro-Prussian War]] and the [[Franco-Prussian War]]) which did not result in interventions by any other great powers and which resulted in significant changes to the map of Europe. These wars, and the wars of [[Unification of Italy|Italian unification]] were concluded among the participants without the approval of non-participant powers in Congresses or Conferences to maintain the balance of power. While various multilateral conferences took place during this period – most notably, the [[London Conference of 1867]] which forestalled war over the [[Luxembourg Crisis]] – the cooperative nature of the Concert and its focus on stability was significantly diminished during this time of conflict.