Master's Thesis from the year 2014 in the subject History - World History - Early and Ancient History, University of Göttingen (History Department), course: History of the Crusades and the relation between the East and West, language: English, abstract: The Crusade movement is one of the most important occurrences of medieval history. It took place throughout two centuries in the Levant and affected both Muslims and Crusaders and in turn changed the way in which West and East related to one another. To understand the history of the Crusades, it is important to study not only the military aspects but also the socio-economic and political relationships. When the Crusaders took control of the Holy Land and many Islamic cities in the Levant, they transferred their feudal European system there. They established four main fiefdoms or lordships, Jerusalem, Edessa, Antioch and Tripoli. In addition, there were another twelve secondary fiefdoms, of which Tibnīn was one. This work is divided into five chapters. An introduction to outline the importance and objectives of the study, and also discusses its primary and second sources as well as the previous studies in this field. The second chapter is a study of the society of Tibnīn, the architecture of the castle of Tibnīn and its importance for the Kingdom of Jerusalem. It illustrates the nature of the relations between the Crusader and Muslim inhabitants in Tibnīn and the economic and agricultural importance of lands of Tibnīn in the age of the Crusades. The third chapter deals with the issues of Crusader rule in Tibnīn, from its origins and evolution to the political role of Tibnīn and its rulers throughout the twelfth century, until its downfall at the hands of the Muslims in 1187 / 583. The possessions of Humphrey I's dynasty, rulers of Tibnīn, in the Levant and their relations with the kings of Jerusalem and the Crusader nobles in the Kingdom of Jerusalem has been discussed as well. The fourth chapter traces the militar