Palestine is a name given to the geographic region between the Mediterranean Sea and the Jordan River. The region is also known as the Land of Israel, the Holy Land and the Southern Levant. In 1832 Palestine was conquered by Muhammad Ali's Egypt, but in 1840 Britain intervened and returned control of the Levant to the Ottomans in return for further capitulations. The end of the 19th century saw the beginning of Zionist immigration and the Revival of the Hebrew language. The movement was publicly supported by Great Britain during World War I with the Balfour Declaration of 1917. The British captured Jerusalem a month later, and were formally awarded a mandate in 1922. In 1947, following World War II and the Holocaust, the British Government announced their desire to terminate the Mandate, and the United Nations General Assembly voted to partition the territory into a Jewish state and an Arab state. The Jewish leadership accepted the proposal but the Arab Higher Committee rejected it; a civil war began immediately, and the State of Israel was declared in 1948. The 1948 Palestinian exodus, known in Arabic as the Nakba ('The Catastrophe') occurred when approximately 711,000 to 725,000 Palestinian Arabs fled or were expelled from their homes, during the 1948 Arab-Israeli War during which Israel captured and incorporated a further 26% of Palestinian territory. In the course of the Six Day War in June 1967, Israel captured the remainder of historic Palestine and began a continuing policy of Israeli settlement and annexation.