The Common Agricultural Policy of the European Union (CAP) has a long tradition. After World War II, agricultural and food production in Europe was substantially weakened and unable to provide sufficient food for the domestic population. The CAP emerged from this situation, with the objectives...

This thesis addresses 3 different aspects of food and poverty related problems in developing countries. The first essay presents a new operational concept of transaction costs that firstly allows assessing the magnitude and secondly recognizing the non homogeneity of food products. This is...