The compromise under which Japan got the German concession in China was bitterly resented in China and led to a backlash against the West.
The Japanese, like the Italians, had territorial demands they wanted the peace conference to recognize. They also wanted the League of Nations to embrace racial equality.
With Italian politics becoming increasingly polarized between violent extremes, the environment is perfect for the rise of Mussolini.
After Italy's postwar territorial demands were rejected by the other Allies, Prime Minister Orlando and the Italian delegation walked out of the peace conference.
The standoff between the Turks and what remained of the Allies (Greece, backed up by Britain) leads to war.
As the USA, Italy, and France lose interest in the region, Britain fights to enforce the Treaty of Sèvres, relying on the Greek Army to provide the military might. Meanwhile, the political situation in Greece changes.
As Allied troops took up positions in Turkey, the Allies and the Ottoman government signed the Treaty of Sèvres, which imposed a harsh set of conditions. But nationalist Turks in the interior of Anatolia were not ready to give up the struggle.
The British accepted Hussein of Mecca as King of Hejaz, but when he resisted their plan to remake the Near East, they allowed the neighboring Emir of Najd to seize control.
An American archaeologist coined the term "The Fertile Crescent" just three years ago in 1916 to describe the arc of lands from Mesopotamia to Palestine that were the most fertile Arab territories. In 1919, France and Britain divided the Fertile Crescent between themselves, much to the displeasure of the Arabs living there.