Sanmartí, Joan, 1955-20222012-04-192012-04-1920050079-8215https://hdl.handle.net/2445/24201I would like to thank Pierre Moret for his praises -which I certainly do not deserve- as well as for his valuable comments and criticisms. An intellectual discussion with such a prominent scholar is a satisfying experience, even if I do not wholly agree with his opinions. His reactions are related to three different topics: the definition of the geographical area covered in my article; the role of population increase in social evolution and the role of migrations.5 p.application/pdfengcc-by-nc-nd (c) Sanmartí, 2005http://creativecommons.org/licenses/by-nc-nd/3.0/esConca de l' EbreEdat del ferroEmigració i immigracióEbro River WatersheadIron ageEmigration and immigrationinfo:eu-repo/semantics/article532806info:eu-repo/semantics/openAccess