The region was part of the Akkadian empire
(2335-2154 BC) which united the Akkadian and Sumerian-speaking Mesopotamians under one rule.
Mosul was an integral part of Assyria from as early as the 25th century BC, and after the Akkadian Empire
and Neo-Sumerian Empire it again became a continuous part of Assyria proper from circa 2050 BC through to the fall of the Neo-Assyrian Empire between 612-599 BC.
The University of Cambridge and Banaras Hindu University determined that a terrible drought that lasted 200 years ultimately doomed not only those Indus cities but the entirety of the Akkadian Empire
, the old Kingdom of Egypt and early Greek civilizations.
It's now thought likely that the droughts at around that time were partly responsible for the collapse not only of the Indus Valley Civilisation, but also of the ancient Akkadian Empire
, Old Kingdom Egypt and possibly Early Bronze Age civilizations in Greece.
Moreover, the finding now links the decline of the Indus cities to a documented global scale climate event and its impact on the Old Kingdom in Egypt, the Early Bronze Age civilizations of Greece and Crete, and the Akkadian Empire
in Mesopotamia, whose decline has previously been linked to abrupt climate change.
Still others used data from tree rings in Southeast Asia to gauge the influence of severe drought on the collapse of the Angkor kingdom, or analysed sediment from Middle Eastern seas to determine how desertification influenced the fall of the Akkadian Empire
more than 4,000 years ago.
The period after the collapse of the Akkadian empire
about 2200 BC was known even then as the seven generations since the Fall of Akkad.
Likewise the Akkadian Empire
conquered the Sumerians (technically the Sag Giga peoples) and ruled much of Iraq and half of Syria in the Third Millennium B.
The narrative itself is organized chronologically, with chapters on geography and prehistory (chapter 1), the Uruk period (chapter 2), the Early Dynastic period (chapter 3), the Akkadian empire
and Third Dynasty of Ur (chapter 4), the Old Babylonian period (chapter 5), the Late Bronze Age (chapter 6), Assyria (chapter 7), the Neo-Babylonian period and Persian Empire (chapter 8), the Hellenistic and Parthian kingdoms and Roman Empire (chapter 9), and the Sassanian Empire (chapter 10).
King Narim-Sin of the Akkadian Empire
was known as "the god of Agade.