families in the land registers". Many of the fellahin did not understand the importance of the registers and therefore the wealthy families took advantage of this. Jewish buyers who were looking for large tracts of land found it favorable to purchase from the wealthy owners. As well many small farmers became in debt to rich families which led to the transfer of land to the new owners and then eventually to the Jewish buyers. In 1918, after the British conquest of Palestine, the military administration closed the Land Register and prohibited all sale of land. The Register was reopened in 1920, but to prevent speculation and ensure a livelihood for the fellahin, an edict was issued forbidding the sale of more than 300 dunams of land or the sale of land valued at more than 3000 Palestine pounds without the approval of the High Commissioner. From the 1880s to the 1930s, most Jewish land purchases were made in the coastal plain, the Jezreel Valley, the Jordan Valley and to a lesser extent the Galilee. This was due to a preference for land that was cheap and without tenants. There were two main reasons why these areas were sparsely populated. The first reason being when the Ottoman power in the rural areas began to diminish in the seventeenth century, many people moved to more centralized areas to secure protection against the Bedouin tribes. The second reason for the sparsely populated areas of the coastal plains was the soil type. The soil, covered in a layer of sand, made it impossible to grow the staple crop of Palestine, corn. As a result, this area remained uncultivated and underpopulated. "The sparse Arab population in the areas where the Jews usually bought their land enabled the Jews to carry out their purchase without engendering a massive displacement and eviction of Arab tenants". In the 1930s, most of the land was bought from landowners. Of the land that the Jews bought, 52.6% were bought from non-Palestinian landowners, 24.6% from Palestinian landowners, 13.4% from government, churches, and foreign companies, and only 9.4% from fellaheen (farmers). On 31 December 1944, out of dunums of land owned in Palestine by large Jewish Corporations and private owners, about 44% was in possession of Jewish National Fund. The table below shows the land ownership of Palestine by large Jewish Corporations (in square kilometres) on 31 December 1945. By the end