Lower Mesopotamia Lower Mesopotamia Lower Mesopotamia is a historical region of Iraq. Also known as the Sawad and al-'Irāq al-'Arabi ("Arabian Irāq") in the Middle Ages. Lower Mesopotamia was home to ancient Sumerian and Babylonian civilisations. An alluvial plain begins north of Baghdad and extends to the Persian Gulf. Here the Tigris and Euphrates rivers lie above the level of the plain in many places, and the whole area is a river delta interlaced by the channels of the two rivers and by irrigation canals. Intermittent lakes, fed by the rivers in flood, also characterize southeastern Iraq. A fairly large area ()
Ichnae (Mesopotamia) Ichnae (Mesopotamia) Ichnae () was a small fortified town, or castle, in Mesopotamia, situated on the river Bilecha, which itself flowed into the Euphrates. It is said by Isidorus of Charax to have owed its origin to the Macedonians. There can be little doubt that it is the same place as is called Ἴχνιαι by Dio Cassius, and Γ̓́σχναι by Plutarch. According to the former writer, it was the place where Crassus overcame Talymenus; according to the latter, that to which the younger Crassus was persuaded to fly when wounded. Its exact position cannot be determined; but it is clear