in Israeli settlements. In addition, around 10,000 Palestinian traders from the West Bank were allowed to travel every day into Israel. By 2014, 92,000 Palestinians worked in Israel legally or illegally, twice as many as in 2010. In 2008, approximately 30% of Palestinians or 754,263 persons living in the West Bank were refugees or descendants of refugees from villages and towns located in what became Israel during the 1948 Arab–Israeli War, according to UNRWA statistics. A 2011 EU report titled "Area C and Palestinian State Building" reported that before the Israeli occupation in 1967, between 200,000 and 320,000 Palestinians used to live in the Jordan Valley, 90% which is in Area C, but demolition of Palestinian homes and prevention of new buildings has seen the number drop to 56,000, 70% of which live in Area A, in Jericho. In a similar period, the Jewish population in Area C has grown from 1,200 to 310,000. Major population centers The most densely populated part of the region is a mountainous spine, running north–south, where the cities of Jerusalem, Nablus, Ramallah, al-Bireh, Jenin, Bethlehem, Hebron and Yattah are located as well as the Israeli settlements of Ariel, Ma'ale Adumim and Beitar Illit. Ramallah, although relatively mid in population compared to other major cities as Hebron, Nablus and Jenin, serves as an economic and political center for the Palestinians. Near Ramallah the new city of Rawabi is under construction. Jenin in the extreme north and is the capital of north of the West Bank and is on the southern edge of the Jezreel Valley. Modi'in Illit, Qalqilyah and Tulkarm are in the low foothills adjacent to the Israeli Coastal Plain, and Jericho and Tubas are situated in the Jordan Valley, north of the Dead Sea. Religion The population of the West Bank is 80–85% Muslim (mostly Sunni) and 12–14% Jewish. The remainder are Christian (mostly Greek Orthodox) and others. Transportation and communications Road system In 2010, the West Bank and Gaza Strip together had of roadways. It has been said that for "Jewish settlers, roads connect; for Palestinians, they separate." Between 1994 and 1997, the Israeli Defense Forces (IDF) built 180 miles of bypass roads in the territories, on appropriated land because they ran close to Palestinian villages. The given aim was said to be to afford protection to settlers from Palestinian sniping, bombing, and drive-by shootings. For TAU emeritus professor of geography Elisha