Modernization is a term that can be applied to many different activities and tendencies among people. The establishment of the British Mandate in Palestine, and the subsequent independence of Israel, were events that could not have occurred without the convergence of several "modern" tendencies in political and social life in the decades before the Allied victory in World War I. It was this victory that ended the control of the Ottoman Empire over Palestine and most of the Middle East.
Beginning in the nineteenth century, as a result partly of the Enlightenment which had taken place even earlier, ethnic self-determination became a major goal of the European peoples and eventually people in all continents. The term basically means that all ethnic or national groups should have the right to control their own destinies rather than being governed by foreign powers or other nations. The nation-state became a political and social ideal.
In Europe at the time of Napoleon's final defeat in 1815, much of the continent did not conform to this ideal. In other words, in many cases, the convergence of a national or ethnic group within a unified political entity hadn't yet been achieved. The German-speaking peoples were not united but were split up among many principalities. The same was true of the Italians. In central Europe, many of the Slavic national groups, such as the Czechs, Slovaks, and Poles, did not have their own countries and were governed by German-speaking Austrians and (in the case of Poland) by Russia. In addition, of course, the Jewish population of Europe, despite its gradual liberation from the harsh restrictions under which they had lived for centuries, had no national homeland or nation-state of their own.
The situation in the Middle East and North Africa at the time was analogous in some respects to that of Europe. The Arabic-speaking peoples did not have a country of their own but were part of the multiethnic Ottoman Empire, though the local Arab rulers had always been given a wide degree of autonomy by the Turkish leadership of the empire. With the defeat of the Central Powers in World War I, both the Austro-Hungarian and Ottoman Empires were dismantled.
In Europe, the settlement after the war granted independence to the "smaller" European nationalities that had been ruled by outsiders and who had been affected, like all of Europe, by the wave of nationalistic and liberal thought that had been growing through the course of the nineteenth century. During the same period, as a result of the ongoing antisemitism in Europe that came to a head in the Dreyfus Affair, Jewish leaders such as Theodore Herzl felt it was impossible for the Jewish people to have any real freedom or self-determination without having a nation-state of their own. The ancestral homeland of the Jewish people in Palestine, then still a part of the Ottoman Empire, became the focus of their efforts to create a nation-state.
Once the Ottoman Empire had fallen, the victorious European powers established "mandates" over much of the non-Turkish Middle Eastern territory that had been part of the Empire. France took control of what has become Syria and Lebanon, and Britain took control of Palestine, "Transjordan" (now Jordan), and the territory that became Iraq. These divisions were in some sense artificial constructs. Palestine presented a special case, because both the Jewish and Arab peoples wished to establish a state of their own on this territory. The Arab peoples, in addition, had the long-term goal of a unified kingdom that would recreate the Arab hegemony over the Middle East and North Africa that had existed in the Middle Ages.
The Jewish and Arab populations can be said to have had the goal of modernization in creating these (at the time) hypothetical nation-states, since the nation-state was the ideal "modern" political entity. The British hindered, or delayed, their goals by refusing until 1948 to relinquish control over Palestine. Yet at the same time, without the British–French victory in World War I, it might never have been possible for either a Jewish or an Arab state to be created there, since the Ottoman Empire could theoretically have continued indefinitely.
The Arabs, perhaps with good reason, accused the European powers of deliberately blocking their efforts to create a country of their own that would encompass all the Arab territories of the former Empire. At the same time, Jewish leaders wanted the British out of Palestine so that an independent Israel could be created. This goal, of course, was realized in 1948, though the UN plan to partition Palestine into separate Jewish and Arab states was not carried out. When the British, who had paradoxically enabled the liberation of Palestine from Ottoman rule, were finally forced to leave, the Israeli War of Independence resulted in the state of Israel while the Arab powers at the time, defeated militarily, took control of East Jerusalem and the West Bank of the Jordan river. In the Six-Day War of 1967, Israeli took control of these territories as well, while at the same time, the Arab peoples, long liberated from European control, continued to have their own independent states in Syria, Lebanon, Iraq, Jordan, Saudi Arabia, and the North African countries.