The Treaty of Sèvres likewise dismembered the Ottoman Empire. Here again secret war-aims treaties reflected Allied ambitions in the Middle East, but Wilson was less willing to challenge them given his belief that the Arab peoples were not ready for self-rule. To avoid the tinge of imperialism, the victors took control of the former Ottoman (and German) territories under “mandates” from the League: Class A mandates for those lands to be prepared for independence (Iraq, Transjordan, and Palestine entrusted to Britain; Syria and Lebanon to France); Class B mandates for those judged not ready for self-rule in the foreseeable future (Tanganyika to Britain, Cameroons and Togoland divided between Britain and France, and Rwanda-Urundi to Belgium); and Class C mandates (German South West Africa to South Africa, Kaiser Wilhelms Land [New Guinea] to Australia, German Samoa to New Zealand, and the Mariana, Marshall, and Caroline islands to Japan).

The victors also agreed, informally, that southeastern Anatolia would be a French sphere of influence, while Italy received the Dodecanese Islands and a sphere in western and southern Anatolia. The Greek government of Venizélos, still a British client, occupied Smyrna (İzmir) and its hinterland, to the consternation of the Italians, who considered this poaching on their zone. Armenia was a special consideration because of its Christian population and the wartime deaths of hundreds of thousands (some claimed millions) of Armenians—through battle, mass murder, or forced deportation—at the hands of the Young Turks, who considered them a seditious element. Talk of an American mandate for Armenia gave way to independence. The collapse of the tsarist regime spared the Allies from having to award Constantinople and the Straits to Russia. The British proposed a League of Nations regime under U.S. administration for these areas, but Wilson refused this responsibility, while Indian Muslims protested any weakening of the Islāmic caliphate. So the status of Constantinople remained in abeyance, although the Straits were demilitarized and an Anglo-French-Italian commission regulated free passage. In August 1920 the helpless sultan’s delegation signed the Treaty of Sèvres.

It was a dead letter. Mustafa Kemal, the Turkish war hero, rallied his army in the interior and rebelled against the foreign influence in Anatolia and Constantinople. Unwilling to dispatch British armies, Lloyd George encouraged the Greeks to enforce the treaty instead. Indeed, Venizélos harboured a dream, the megali idea, of conquering the entire Turkish littoral and making the Aegean Sea a “Greek lake” as in ancient times. The Treaty of Sèvres, therefore, was the signal for the start of a Greco-Turkish War. By the end of 1920 the Greeks had fanned out from İzmir, occupied the western third of Anatolia, and were threatening the Turkish Nationalists’ capital of Ankara. In March 1921 the British and French proposed a compromise that was rejected by the Turks, who nonetheless kept open diplomatic links in an effort to split the Allies. But as Kemal, later called Atatürk, put it: “We could not flatter ourselves that there was any hope of diplomatic success until we had driven the enemy out of our territory by force of arms.” The tide of battle turned in August 1921, and the Greeks were forced to retreat precipitously through a hostile countryside. The French then made a separate peace with Ankara, settled their Syrian boundary, and withdrew support for the Anglo-Greek adventure. In March 1921 Turkey also signed a treaty of friendship with the new U.S.S.R. regulating the border between them and dooming the briefly independent Armenian and Trans-caucasian republics.

Another Allied offer (March 1922) could not tempt Kemal, who now had the upper hand. His summer attack routed the Greeks, who engaged in a panicky naval evacuation from İzmir which the Turks reentered on September 9. Kemal then turned north toward the Allied zone of occupation at Çanak (now Çanakkale) on the Dardanelles Strait. The French and Italians pulled out, and the British commissioner was authorized to open hostilities. At the last moment the Turks relented, and the Armistice of Mudanya (October 11) ended the fighting. Eight days later Lloyd George’s Cabinet was forced to resign. A new peace conference produced the Treaty of Lausanne (July 24, 1923), which returned eastern Thrace to Turkey and recognized the Nationalist government in return for demilitarization of the Straits. The Treaty of Lausanne was to prove a durable solution to the old “Eastern question.”

The Young Turk and Kemalist rebellions were models for other Islāmic revolts against Western imperialism. Persian nationalists had challenged the shah and Anglo-Russian influence before 1914 and flirted with the Young Turks (hence with Germany) during the war. By August 1919, however, British forces had contained both domestic protest and an ephemeral Bolshevik incursion and won a treaty from Tehrān providing for British administration of the Persian army, treasury, and railroads in return for evacuation of British troops. The Anglo-Persian Oil Company already controlled the oil-rich Persian Gulf. In June 1920, however, nationalist agitation resumed, forcing the shah to suspend the treaty. In Egypt, under British occupation since 1882 and a protectorate since 1914, the nationalist Wafd Party under Saʿd Zaghlūl Pasha, agitated for full independence on Wilsonian principles. Their three weeks’ revolt of March 1919, suppressed by Anglo-Indian troops, gave way to passive resistance and bitter negotiations between Zaghlūl and the British high commissioner, Edmund Allenby. On February 28, 1922, the British ended the protectorate and granted legislative power to an Egyptian assembly, though they retained military control of the Suez Canal.

In India, where Britain controlled the fate of some 320,000,000 people with a mere 60,000 soldiers, 25,000 civil servants, and 50,000 residents, the war also sparked the first mass movement for independence. Out of hostility to Britain’s Turkish policies, Islāmic leaders joined forces with Hindus in protest against the British raj. Edwin Montagu promised constitutional reform in July 1918, but the Indian National Congress deemed it insufficient. In 1919 famine, the return of Indian war veterans, and the inspiration of Mohandas Gandhi provoked a series of ever larger demonstrations until, on April 13, a nervous British general at Amritsar ordered his troops to open fire, and 379 Indians were killed. The amīr of Afghanistan, Amānollāh Khān, then sought to exploit the unrest in India to throw off the informal protectorate Britain enjoyed over his country. Parliament hastily approved the Montagu reforms, vetoed a campaign through the Khyber Pass, and so staved off a general uprising. But the Indian independence movement became a British preoccupation.

Other challenges to the empire arose from white minorities. After the Armistice, Lloyd George finally bowed to Irish demands for independence. After much negotiation and a threatened revolt in the northern counties, the compromise of December 1921 established the Irish Free State as a British dominion in the south while predominantly Protestant Northern Ireland remained in the United Kingdom. (The Sinn Féin nationalists continued to protest the treaty until, in 1937, Éire achieved complete independence, Ulster remaining British.) In South Africa the war propelled General Jan Smuts to international prominence and an influential role at the peace conference. South African expansionists clung to their own version of manifest destiny and dreamed of absorbing German South West Africa, Bechuanaland, and Rhodesia to forge a vast empire on the southern third of the continent. The British Colonial Office sternly resisted such ambitions. Yet the white minority of 1,500,000, dwarfed by a population of 5,000,000 Blacks, 200,000 Indians, and 600,000 Chinese labourers, was itself split among Boer nationalists, “reconciled Boers,” and British. The nationalists cited Wilsonian principles in a symbolic claim to restore the independent Transvaal and Orange republics in 1919 and remained a disaffected nationality within the Union of South Africa.

The non-European revolts, however—in Turkey, Persia, Egypt, India, and China—were the first expressions of what would become a major theme of the 20th century. Native elites, often educated in Europe and citing the anti-imperialist ideas of Wilson or Lenin, formed the first cadre of mass movements for decolonization. Often alienated from Europeans by their colour and customs, but no longer able to fit comfortably into their pre-modern societies, they became deracinated agitators for independence and modernization. Their growing numbers demonstrated that European imperialism, even as it reached its greatest extent through the 1919 treaties, must inevitably be a passing phenomenon.