شجرة الزيتون و أثرها في اقتصاد مملكة بيت المقدس الصليبية

الملخص EN

Agriculture is considered one of one of pillars of the economy of any political entity.

The crusader's kingdom of Jerusalem is among the political entities which were found in the Levant and lasted for two centuries 493-690.A.H/ 1099-1291.A.D, This kingdom which was in a great need exploit all the natural resources made use of the fertility of soil and the Abundance of water and the suitable climate by exploiting a agricultural land in cultivation crops that has a great important to the crusader's economy on of there was olive tree much of their attention the cultivated it in a large scale .the products of olives and olive oil became important source of income to the crusader's kingdom treasury.

Thus came the choice of the subject of the olive tree and its effect on the economy as a title for this paper .

in the outset the paper discusses the important of the location of the Levant from religious and economic point of view , the arrival of the first crusader's expedition and the founding of the kingdom of Jerusalem .

The paper also studies the impolance of olive tree and its cultivation , and the land owners , and the was they acquired them, the relation between the peasants and the land owners and the taxes that were levied on the produce and it link to olive tree last but not least , the paper .

studies the industries that are based on olive tree and th conclusion