As we have seen, the Arab uprising duringWorldWar I helped bring about the demise of the Ottoman Empire. Actually, unrest against Ottoman rule had existed in the Arabian peninsula since the eighteenth century, when theWahhabi revolt attempted to purge the outside influences and cleanse Islam of corrupt practices that had developed in past centuries. The revolt was eventually suppressed, but the influence of theWahhabi movement persisted, revitalized in part by resistance to the centralizing and modernizing efforts of reformist elements in the nineteenth century. World War I offered an opportunity for the Arabs to throw off the shackles of Ottoman rule—but what would replace them? The Arabs were not a nation but an idea, a loose collection of peoples who often do not see eye to eye on what constitutes their community. Disagreement over what it means to be an Arab has plagued generations of political leaders who have sought unsuccessfully to knit together the disparate peoples of the region into a single Arab nation. When the Arab leaders in Mecca declared their independence from Ottoman rule in 1916, they had hoped for British support, but they were sorely disappointed when much of the area was placed under British or French authority as mandates of the League of Nations. To add salt to the wound, the new state of Lebanon had been created to place the Christian peoples there under a Christian administration. The land of Palestine—once the home of the Jews but now inhabited primarily by Muslim Arabs—became a separate mandate. According to the Balfour Declaration, issued by the British foreign secretary Lord Balfour in November 1917, Palestine was to be a national home for the Jews. The declaration was ambiguous on the legal status of the territory and promised that the decision would not undermine the rights of the non-Jewish peoples currently living in the area. But Arab nationalists were incensed. How could a national home for the Jewish people be es- tablished in a territory where 90 percent of the population was Muslim? In the early 1920s, a leader of the Wahhabi movement, Ibn Saud (1880 –1953), united Arab tribes in the northern part of the Arabian peninsula and drove out the remnants of Ottoman rule. Ibn Saud was a descendant of the family that had led the Wahhabi revolt in the eighteenth century. Devout and gifted, he won broad support among Arab tribal peoples and established the kingdom of Saudi Arabia throughout much of the peninsula in 1932. At first, his new kingdom, consisting essentially of the vast wastes of central Arabia, was desperately poor. Its financial resources were limited to the income from Muslim pilgrims visiting the holy sites in Mecca and Medina. But during the 1930s, American companies began to explore for oil, and in 1938, Standard Oil made a successful strike at Dahran, on the Persian Gulf. Soon an Arabian- American oil conglomerate, popularly called Aramco, was established, and the isolated kingdom was suddenly inundated by Western oilmen and untold wealth. In the meantime, Jewish settlers began to arrive in Palestine in response to the promises made in the Balfour Declaration. As tensions between the new arrivals and existing Muslim residents began to escalate, the British tried to restrict Jewish immigration into the territory and rejected the concept of a separate state. They also created the separate emirate of Trans-Jordan out of the eastern portion of Palestine. After World War II, it would become the independent kingdom of Jordan. The stage was set for the conflicts that would take place in the region after World War II.