When Abraham was born and raised the area between the river was controlled by the Kasdim, but by the time that Abraham sent Eliezer, hi slave, to find a wife for Isaac, it was ruled by Aram. Aram is a totally different empire than the Kasdim. A we know this from the name of the area that Eliezer arrived at, Aram Naharaim, (that is the area ruled by Aram between the two rivers). now here it is proper to mention that later when Isaac and Rebeka sent Yaakov to find a wife they sent him to Charan, not Mesopotamia. that means that they had heard already the Laban the son of Nachor had already moved away from Mesopotamia to some midpoint between Mesopotamia and the land of Canaan, i.e., Charan ----------------------------------------------When אברהם was born and raised the area between the river was controlled by the כשדיים , but by the time that אברהם sent אליעזר, hi slave, to find a wife for יצחק, it was ruled by ארם. NOW ארם is a totally different empire than the כשדיים. A we know this from the name of the area that אליעזר arrived at, ארם נהריים, (that is the area ruled by Aram between the two rivers). now here it is proper to mention that later when יצחק and רבקה sent יעקב to find a wife they sent him to חרן, not Mesopotamia. that means that they had heard already the לבן the son of נחור had already moved away from Mesopotamia to some midpoint between Mesopotamia and the land of כנען, i.e., חרן