A new guidebook provides readers with tours of 18 Palestinian villages depopulated in 1948, allowing Israelis to slowly learn the story of Palestine and create a new reality between the river and the sea. By Danit Shaham A book always makes a statement.  Whether it’s resting on the table or visible on a shelf, it’s making a statement – cultural, political, or both. Space, on the other hand, represented by maps, hiking trails, signs, is usually viewed as something objective.  Neutral.  Not subordinated to social, historical or other forms of power. “Once Upon a Land,” published by Zochrot and Pardes, offers 18…