Paris Peace Conference (1919–1920) in the context of "League of Nations"

The Treaty of Versailles was a peace treaty signed on 28 June 1919. As the most important treaty of World War I, it ended the state of war between Germany and most of the Allied Powers. It was signed in the Palace of Versailles, exactly five years after the assassination of Archduke Franz Ferdinand, which led to the war. The other Central Powers on the German side signed separate treaties. Although the armistice of 11 November 1918 ended the actual fighting, and agreed certain principles and conditions including the payment of reparations, it took six months of Allied negotiations at the Paris Peace Conference to conclude the peace treaty. Germany was not allowed to participate in the negotiations before signing the treaty.

The treaty required Germany to disarm, make territorial concessions, extradite alleged war criminals, agree to Kaiser Wilhelm being put on trial, recognise the independence of states whose territory had previously been part of the German Empire, and pay reparations to the Entente powers. The most critical and controversial provision in the treaty was: "The Allied and Associated Governments affirm and Germany accepts the responsibility of Germany and her allies for causing all the loss and damage to which the Allied and Associated Governments and their nationals have been subjected as a consequence of the war imposed upon them by the aggression of Germany and her allies." The other members of the Central Powers signed treaties containing similar articles. This article, Article 231, became known as the "War Guilt" clause.

David Lloyd George, 1st Earl Lloyd-George of Dwyfor (17 January 1863 – 26 March 1945) was Prime Minister of the United Kingdom from 1916 to 1922. A Liberal Party politician from Wales, he was known for leading the United Kingdom during the First World War, for social-reform policies, for his role in the Paris Peace Conference, and for negotiating the establishment of the Irish Free State.

Born in Chorlton-on-Medlock, Manchester, and raised in Llanystumdwy, Lloyd George gained a reputation as an orator and proponent of a Welsh blend of radical Liberal ideas that included support for Welsh devolution, the disestablishment of the Church of England in Wales, equality for labourers and tenant farmers, and reform of land ownership. He won an 1890 by-election to become the Member of Parliament for Caernarvon Boroughs, and was continuously re-elected to the role for 55 years. He served in Henry Campbell-Bannerman's cabinet from 1905. After H. H. Asquith succeeded to the premiership in 1908, Lloyd George replaced him as Chancellor of the Exchequer. To fund extensive welfare reforms, he proposed taxes on land ownership and high incomes in the 1909 People's Budget, which the Conservative-dominated House of Lords rejected. The resulting constitutional crisis was only resolved after elections in 1910 and passage of the Parliament Act 1911. His budget was enacted in 1910, with the National Insurance Act 1911 and other measures helping to establish the modern welfare state. He was embroiled in the 1913 Marconi scandal but remained in office and secured the disestablishment of the Church of England in Wales.

The Principality of Albania (Albanian: Principata e Shqipërisë) was a monarchy from 1914 to 1925. It was headed by Wilhelm, Prince of Albania, and located in modern Albania in the Balkan region of Europe. The Ottoman Empire owned the land until the First Balkan War (1912—1913), which ended in the Treaty of London that formed the principality. The Principality of Albania survived invasions during World War I (1914—1918) and subsequent disputes over Albanian independence during the Paris Peace Conference (1919—1920). In 1925, the monarchy was abolished and the Albanian Republic (1925—1928), a parliamentary republic and dictatorship, was declared.

The Treaty of Trianon (French: Traité de Trianon; Hungarian: Trianoni békediktátum; Italian: Trattato del Trianon; Romanian: Tratatul de la Trianon), often referred to in Hungary as the Peace Dictate of Trianon or Dictate of Trianon, was prepared at the Paris Peace Conference. It was signed on the one side by Hungary and, on the other, by the Allied and Associated Powers, in the Grand Trianon château in Versailles on 4 June 1920. It formally terminated the state of war issued from World War I between most of the Allies of World War I and the Kingdom of Hungary. The treaty is famous primarily due to the territorial changes imposed on Hungary and recognition of its new international borders after the First World War.

As part of the Austro-Hungarian Empire, Hungary had been involved in the First World War since August 1914. After its allies, Bulgaria and later the Ottoman Empire, signed armistices with the Entente, the political elite in Budapest also opted to end the war. On 31 October 1918, the Budapest government declared independence of Hungary from Austria and immediately began peace talks with the Allies.

Qingdao, archaicly known as Tsingtao, is a prefecture-level city in the eastern Shandong Province of China. Located on China's Yellow Sea coast, Qingdao was long an important fortress. In 1897, the city was ceded to Germany. For the Germans, Qingdao was a strategic trade center, port and base for its East Asia Squadron, allowing the German navy to project dominance in the Pacific. In 1914, following the outbreak of World War I, Japan occupied the city and the surrounding province during the Siege of Tsingtao. In 1915, China agreed to recognize Japan's special position in the territory through what became known as the Twenty-One Demands. In 1918, the Chinese government, under the control of the warlord Duan Qirui, secretly agreed to Japanese terms in exchange for a loan. Following the First World War, during the Paris Peace Conference, Japan secured agreements with the Allied powers to recognize its claim to the areas in Shandong, which included Qingdao, previously occupied by Germany. In 1922, Shandong reverted to Chinese control following the United States' mediation during the Washington Naval Conference. Today, Qingdao is a major nodal city of the Belt and Road Initiative (BRI) that connects Continental and East Asia with Europe. It has the highest GDP of any city in the province.

Administered at the sub-provincial level, Qingdao has jurisdiction over seven districts and three county-level cities (Jiaozhou, Pingdu, Laixi). As of the 2020 census, Qingdao built-up (or metro) area made of the seven urban districts (Shinan, Shibei, Huangdao, Laoshan, Licang, Chengyang and Jimo) was home to 7,172,451 inhabitants, making it the 15th largest city in China by population. Lying across the Shandong Peninsula and looking out to the Yellow Sea, it borders the prefecture-level cities of Yantai to the northeast, Weifang to the west and Rizhao to the southwest.

The Armistice of 11 November 1918 was the armistice that ended fighting on land, at sea, and in the air in World War I between the Entente and their last remaining opponent, Germany. It was signed in a railroad car in the Compiègne Forest, near the town of Compiègne. Previous armistices had been agreed with Bulgaria, the Ottoman Empire and Austria-Hungary. It was concluded after the German government sent a message to American president Woodrow Wilson to negotiate terms on the basis of a recent speech of his and the earlier declared "Fourteen Points", which later became the basis of the German surrender at the Paris Peace Conference, which took place the following year.

Also known as the Armistice of Compiègne (French: Armistice de Compiègne, German: Waffenstillstand von Compiègne) from the town near the place where it was officially agreed to at 5:00 a.m. by the Allied Supreme Commander, French Marshal Ferdinand Foch, it came into force at 11:00 a.m. Paris Time (11:00 UT) on 11 November 1918 and marked a victory for the Entente and a defeat for Germany, although not formally a surrender.

The Potsdam Conference (German: Potsdamer Konferenz) was held at Potsdam in the Soviet occupation zone from 17 July to 2 August 1945, to allow the three leading Allies to plan the postwar peace, while avoiding the mistakes of the Paris Peace Conference of 1919. The participants were the Soviet Union, the United Kingdom, and the United States. They were represented respectively by General Secretary Joseph Stalin, prime ministers Winston Churchill and Clement Attlee, and President Harry S. Truman. They gathered to decide how to administer Germany, which had agreed to an unconditional surrender nine weeks earlier. The goals of the conference also included establishing the postwar order, solving issues on the peace treaty, and countering the effects of the war.

The foreign ministers and aides played key roles: Vyacheslav Molotov, Anthony Eden and Ernest Bevin, and James F. Byrnes. From 17 July to 25 July, nine meetings were held, when the Conference was interrupted for two days, as the results of the British general election were announced. By 28 July, Attlee had defeated Churchill and replaced him as Britain's representative, with Britain's new Secretary of State for Foreign Affairs, Ernest Bevin, replacing Anthony Eden. Four days of further discussion followed. During the conference, there were meetings of the three heads of government with their foreign secretaries, as well as meetings of only the foreign secretaries. Committees that were appointed by the latter for precursory consideration of questions before the conference also met daily. During the Conference, Truman was secretly informed that the Trinity test of the first atomic bomb on 16 July had been successful. He hinted to Stalin that the U.S. was about to use a new kind of weapon against the Japanese. Though this was the first time the Soviets had been officially given information about the atomic bomb, Stalin was already aware of the bomb project, having learned about it through espionage long before.

Faisal I bin Hussein bin Ali al-Hashimi (Arabic: فيصل بن حسين بن علي الهاشمي, romanized: Fayṣal bin Ḥusayn bin ʻAlī al-Hāshimī; 20 May 1885 – 8 September 1933) was a Hejazi statesman who served as the King of Iraq from 23 August 1921 until his death in 1933. A member of the Hashemite family, he was a leader of the Great Arab Revolt during the First World War, and ruled as the unrecognized King of the Arab Kingdom of Syria from March to July 1920 when he was expelled by the French.

The third son of Hussein bin Ali, the Grand Emir and Sharif of Mecca, Faisal was born in Mecca and raised in Istanbul. From 1916 to 1918, with British assistance, he played a major role in the revolt against the Ottoman Empire. He helped set up an Arab government in Syria, based in Damascus, and led the Arab delegation at the Paris Peace Conference in 1919. In 1920, the Syrian National Congress proclaimed Faisal king, rejecting the French claim to a Mandate for Syria. In response, France invaded a few months later, abolished the kingdom and forced him into exile.