The Treaty of Hünkâr İskelesi (once commonly spelled Unkiar Skelessi, and translating to The Treaty of "the Royal Pier" or "the Sultan's Pier") was a treaty signed between the Russian Empire and the Ottoman Empire on July 8, 1833, following the military aid of Russia against Mehmed Ali that same year.
 The treaty brought about an alliance between the two powers, as well as a guarantee that the Ottomans would close the Dardanelles to any foreign warships if the Russians requested such action.
 The treaty would have significant consequences regarding the Ottoman Empire’s foreign relations, especially with Great Britain and Ireland, as the terms of the treaty worried the other great powers of Europe.
Peace of Brześć Kujawski was a peace treaty signed on December 31, 1435 in Brześć Kujawski that ended the Polish–Teutonic War (1431–1435).
 The treaty was signed in the aftermath of the Livonian Order's defeat at the hands of the allied Polish-Lithuanian force in the Battle of Pabaiskas (Wiłkomierz).
 The Teutonic Knights agreed to cease their support to Švitrigaila (who tried to break the Polish-Lithuanian union) and in the future to support only Grand Dukes properly elected jointly by Poland and Lithuania.
 The treaty did not change borders determined by the Treaty of Melno in 1422.
 The Peace of Brześć Kujawski showed that Teutonic Knights lost their universal missionary status.
 Teutonic and Livonian Order no longer interfered with Polish–Lithuanian affairs; instead Poland and Lithuania involved themselves in the Thirteen Years' War, the civil war in Prussia that tore it in half.
The Treaty of Brest-Litovsk was a peace treaty signed on 3 March 1918 between the new Bolshevik government of Soviet Russia and the Central Powers (Germany, Austria-Hungary, Bulgaria, and the Ottoman Empire), that ended Russia's participation in World War I.
 The treaty was signed at Brest-Litovsk (Polish: "Brześć Litewski" ; since 1945 Brest), after two months of negotiations.
 The treaty was agreed upon by the Bolshevik government under threat of further advances by German and Austrian forces.
 According to the treaty, Soviet Russia defaulted on all of Imperial Russia's commitments to the Triple Entente alliance.
The Treaty of Brest-Litovsk was a peace treaty signed on March 3, 1918 between the Russian SFSR and the Central Powers, but prior to that on February 9, 1918, the Central Powers signed an exclusive protectorate treaty (German: "Brotfrieden" , "peace for bread") with the Ukrainian People's Republic as part of the negotiations that took place in Brest-Litovsk, Grodno Governorate (now Brest, Belarus) recognizing the sovereignty of the Ukrainian republic.
 Although not formally annexing the territory of the former Russian Empire, Germany and Austria-Hungary secured food-supply support in return for providing military protection.
 The Quadruple Alliance recognized Ukraine as a neutral state.
Rıza Tevfik (Rıza Tevfik Bölükbaşı after the Surname Law of 1934; 1869 – 31 December 1949) was a Turkish philosopher, poet, politician, and a community leader (for some members among the Bektashi community) of late 19th century and early 20th century.
 A polyglot, he is most remembered in Turkey for being one of the four Ottoman signatories of the disastrous Treaty of Sèvres, for which reason he was included in 1923 among the 150 personae non gratae of Turkey, and he spent 20 years in exile until he was given amnesty by Turkey in 1943.
The Treaty of Akhal was a treaty signed by Persia and Imperial Russia on 21 September 1881.
 The treaty marked Persia's official recognition of Khwarazm's annexation by the Russian Empire.
 Although Persia had won a clear victory in the last Ottoman–Persian War (1821–23) over their Ottoman arch rivals, it had been considerably weakened by years of ineffective rulers, the defeat against Russia in 1813 and 1828 in which they lost all of the Caucasus, and with the increasing occupation by Great Britain of Egypt, during the years of 1873 to 1881, and on top of that the decaying Ottoman Empire, Imperial Russia stepped up its campaign to wrest full control over Central Asia.
 See The Great Game.
 Hence forces led by Generals Mikhail Skobelev, Ivan Lazarev, and Konstantin Kaufman spearheaded the campaign, with Persia unable to react.
 The immobilized Naser al-Din Shah Qajar sent foreign secretary "Mirza Sa'eed Khan Mo'tamen ol-Mulk" to meet Ivan Zinoviev and sign a treaty in Tehran.
The Treaty of Sèvres (French: "Traité de Sèvres" ) was one of a series of treaties that the Central Powers signed after their defeat in World War I.
 Hostilities had already ended with the Armistice of Mudros.
 The treaty was signed on 10 August 1920, in an exhibition room at the Manufacture nationale de Sèvres porcelain factory in Sèvres, France.
The U.S.—German Peace Treaty is a peace treaty between the U.S. and German governments, signed in Berlin on August 25, 1921, in the aftermath of World War I.
 The main reason for the conclusion of that treaty was the fact that the U.S. Senate did not consent to ratification of the multilateral peace treaty signed in Versailles, thus leading to a separate peace treaty.
 Ratifications were exchanged in Berlin on November 11, 1921, and the treaty became effective on the same day.
 The treaty was registered in "League of Nations Treaty Series" on August 12, 1922.
The Treaty of London of 1839, also called the First Treaty of London, the Convention of 1839, the Treaty of Separation, the Quintuple Treaty of 1839, or the Treaty of the XXIV articles, was a treaty signed on 19 April 1839 between the Concert of Europe, the United Kingdom of the Netherlands and the Kingdom of Belgium.
 It was a direct follow-up to the 1831 Treaty of the XVIII Articles which the Netherlands had refused to sign, and the result of negotiations at the London Conference of 1838–1839.
The Treaty of Versailles (French: "Traité de Versailles" ) was the most important of the peace treaties that brought World War I to an end.
 The Treaty ended the state of war between Germany and the Allied Powers.
 It was signed on 28 June 1919 in Versailles, exactly five years after the assassination of Archduke Franz Ferdinand.
 The other Central Powers on the German side of World War I signed separate treaties.
 Although the armistice, signed on 11 November 1918, ended the actual fighting, it took six months of Allied negotiations at the Paris Peace Conference to conclude the peace treaty.
 The treaty was registered by the Secretariat of the League of Nations on 21 October 1919.

Question: What treaty signed by the Central Powers signed after their defeat in World War I did Rıza Tevfik Bölükbaşı sign?
Answer: Treaty of Sèvres