The treaty was the result of the Paris Peace Conference of 1919, which met in the Palace of Versailles from 18 January 1919 to 21 January 1920. The location and opening date had not been chosen by chance: in 1871, German dignitaries had made the imperial proclamation in the Hall of Mirrors at Versailles during the siege of Paris. This (among many other factors, for example France's high reparations to Germany) reinforced Franco-German hereditary enmity and French revanchism ("Toujours y penser, jamais en parler"). France's head of government, Georges Clemenceau, hoped that the choice of location would heal a national trauma.
This had been preceded on 8 January 1918 by the 14-point programme of US President Woodrow Wilson, which from the German point of view was the basis for the Compiègne Armistice on 11 November 1918, which was initially limited to 36 days.
Beforehand, a select committee of Congress met, the so-called Council of Four, which included US President Woodrow Wilson, French Prime Minister Georges Clemenceau, British Prime Minister David Lloyd George and Italian Minister Vittorio Emanuele Orlando. The Council laid down the main points of the treaty. Only the victorious powers participated in the oral negotiations; only memoranda were exchanged with the German delegation. The result of the negotiations was finally presented to the German delegation as a draft treaty on 7 May 1919 - not coincidentally on the anniversary of the sinking of the RMS Lusitania. The German delegation - which included Professors Max Weber, Albrecht Mendelssohn Bartholdy, Walther Schücking and Hans Delbrück, as well as General Max Graf Montgelas - refused to sign and pressed for the provisions to be softened, although the German delegation was not admitted to the oral negotiations; notes were exchanged instead. Among the few subsequent improvements in the mantle note presented by the Allies on June 16 was the plebiscite in Upper Silesia. The victorious powers would not allow any further touch-ups and demanded the ultimate signature. Otherwise they would allow their troops to enter Germany. For this purpose the commander-in-chief of the Allied forces, Marshal Ferdinand Foch, had worked out a plan: From the already occupied Rhineland, the Entente troops were to advance eastward along the Main River to reach the Czech border by the shortest route, thus separating northern and southern Germany. In circles around the Chief President of East Prussia, Adolf von Batocki, the Social Democrat August Winnig and General Otto von Below, plans were developed to reject the peace terms outright and to abandon West Germany to the invading troops of the victorious powers without a fight. In the Prussian eastern provinces, where the Reichswehr was still relatively strong, an eastern state was then to be founded as a centre of resistance against the Entente. On June 20, 1919, Prime Minister Philipp Scheidemann resigned. Already on May 12, 1919, he had expressed his position in the Weimar National Assembly with the question that had become a common phrase:
"What hand would not wither that put itself and us in such bonds?"
Under pressure from the threat of invasion and the British naval blockade, which continued despite the armistice and led to fears of a dramatic worsening of the food situation, the National Assembly voted to accept the treaty on June 22, 1919, by 237 votes to 138. Scheidemann's party colleague and successor Gustav Bauer exclaimed in the session:
"We stand here out of a sense of duty, in the knowledge that it is our damned duty to try to save what can be saved [...]. If the Government [...] signs with reservation, it emphasizes that it is giving way to violence in the determination to spare the unspeakably suffering German people a new war, the rending of its national unity by further occupation of German territory, appalling famine for women and children, and merciless prolonged restraint of prisoners of war."
Foreign Minister Hermann Müller (SPD) and Transport Minister Johannes Bell (Centre) therefore signed the treaty - under protest - on 28 June 1919.
Although the representatives of the USA, the most important signatory power alongside Great Britain and France, were the first to sign the treaty after the two German delegates, the American Congress did not ratify the treaty. On November 19, 1919, and again on March 19, 1920, the treaty and the accession of the United States to the League of Nations were rejected. The USA therefore concluded the Berlin Treaty of 25 August 1921 with Germany.