Young Israeli Girl

Many Jews living in the Diaspora have long aspired to return to Zion and the Land of Israel, though the amount of human effort that should be spent towards such aim is a matter of dispute in Judaism. That hope and yearning was articulated in the Bible, and is an important theme of the Jewish belief system. After the Jews were expelled from Spain in 1492, some communities settled in Palestine. During the 16th century, communities struck roots in the Four Holy Cities—Jerusalem, Tiberias, Hebron, and Safed—and in 1697, Rabbi Yehuda Hachasid led a group of 1,500 Jews to Jerusalem. In the second half of the 18th century, Eastern European opponents of Hasidism, known as the Perushim, settled in Palestine.
The first large wave of "modern" immigration, known as the First Aliyah, began in 1881, as Jews fled pogroms in Eastern Europe. Although the Zionist movement already existed in theory, Austro-Hungarian journalist Theodor Herzl is credited with founding political Zionism, a movement which sought to establish a Jewish state in the Land of Israel, by elevating the Jewish Question to the international plane. In 1896, Herzl published Der Judenstaat (The State of the Jews), offering his vision of a future state; the following year he presided over the first World Zionist Congress.
The Second Aliyah (1904–1914), began after the Kishinev pogrom; some 40,000 Jews settled in Palestine, but nearly half of them left. Both the first and second waves of migrants were mainly Orthodox Jews, but those in the Second Aliyah included socialist pioneers who established the kibbutz movement. During World War I, British Foreign Secretary Arthur Balfour issued what became known as the Balfour Declaration, which "viewed with favour the establishment in Palestine of a national home for the Jewish people". At the request of Edwin Samuel Montagu and Lord Curzon, a line was also inserted stating "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".