"At the end of the 19th century, one-half of the cultivable land in Algiers was dedicated. Similarly, in Tunis one-third and in Egypt one-eighth, of the cultivated soil was ‘in the ownership of God’. But it was already realised by the beginning of the 20th century, first by France and later in Turkey and Egypt, that the institution of waqf was in some respects a challenge to the natural growth and development of the national economy."