sentences:  The British Empire realized this in the early part of the twentieth century, which helped them secure the cooperation of the Arabs, leading them to revolt (Arab Revolt) against the Turkish Ottoman Empire during World War I.The British promised to help the Arabs establish a united Arab kingdom under Sherif Hussein of Mecca, which would encompass the Asian part of the Arab World (including the modern day Arabian peninsula, Iraq, Syria, Lebanon, Palestine, Israel and Jordan).After winning the war, however, the British betrayed Sharif Hussein and instead helped divide the region into mini states, implementing their policy of "Divide and Rule".