Despite the fact that it took place roughly at the same period, the spread of coffee consumption over the world appear to have occurred independently from the European commercial expansion. It spread during the early 16th century from Arabia through the Ottoman Empire and to Iran. The habit may have penetrated the Safavid realm via the heavily Arab-influenced southern shores. The constant wars and exchange of territories between the two empires can only have helped to spread this Turkish custom. --- Matthee, Rudi (1994) “Coffee in Safavid Iran: Commerce and Consumption”, Journal of the Economic and Social History of the Orient, 37/1, 1-32.