The Ottoman Empire was very oppressive toward the Arab peoples of the Middle East. Following the Young Turk coup of 1908, the Ottomans abandoned their pluralistic and pan-Islamic policies, instead pursuing a policy of secular Turkish nationalism. The formerly tolerant Ottoman Empire began overtly discriminating against its non-Turkish inhabitants. Arabs in particular were faced with political, cultural and linguistic persecution.
When the Ottomans entered World War I on the side of the Central Powers in 1914, they upheld the ban on the official use of the Arabic language and it’s teaching in schools, while arresting many Arab nationalist figures in Damascus and Beirut. Arabs were further threatened by the construction of the Hijaz Railway, connecting Damascus and Mecca, which promised to facilitate the mobility of Turkish troops into the Arab heartland.
Arab Nationalists formed an alliance with Britain and France based on promises of an Arab homeland. The first of these promises came during 1915 in an exchange of ten letters between Sir Henry McMahon, Britain’s high commissioner in Egypt, and Sharif Hussein bin Ali, King of the Arabs and King of the Hijaz. Essentially, Britain pledged, in what became known as the Hussein-McMahon Correspondence, to support Arab independence if Hussein’s forces revolted against the Turks.
In June 1916, as head of the Arab nationalists and in alliance with Britain and France, Sharif Hussein initiated the Great Arab Revolt against Ottoman rule. His sons, the emirs Abdullah and Faisal, led the Arab forces, with Emir Faisal’s forces liberating Damascus from Ottoman rule in 1918. At the end of the war, Arab forces controlled all of modern Jordan, most of the Arabian Peninsula and much of southern Syria.
Sharif Hussein’s intention was to establish a single independent and unified Arab state stretching from Aleppo (Syria) to Aden (Yemen), based on the ancient traditions and culture of the Arab people, the upholding of Islamic ideals and the full protection and inclusion of ethnic and religious minorities.
When Balfour Declaration was leaked to the public it was an indication to Arabs that Britain and France were making false promises.
Foreign Office
November 2nd, 1917
Dear Lord Rothschild,
I have much pleasure in conveying to you, on behalf of His Majesty's Government, the following declaration of sympathy with Jewish Zionist aspirations which has been submitted to, and approved by, the Cabinet.
"His Majesty's Government view with favour the establishment in Palestine of a national home for the Jewish people, and will use their best endeavours to facilitate the achievement of this object, it being clearly understood that nothing shall be done which may prejudice the civil and religious rights of existing non-Jewish communities in Palestine, or the rights and political status enjoyed by Jews in any other country."
I should be grateful if you would bring this declaration to the knowledge of the Zionist Federation.
Yours sincerely,
Arthur James Balfour
After the War the Arab lands were divvied up and Wilson’s 14 points were pushed aside by Britain and France.
XII. The Turkish portion of the present Ottoman Empire should be assured a secure sovereignty, but the other nationalities which are now under Turkish rule should be assured an undoubted security of life and an absolutely unmolested opportunity of autonomous development, and the Dardanelles should be permanently opened as a free passage to the ships and commerce of all nations under international guarantees.
In summary Britain and France betrayed the Arabs. If you need a history of what happened next let me know I will fill it in for you. A clear examination of history shows that Britain did a lot "wrong" in hindsight.