Kazallu
Kazalla or Kazallu (Ka-zal-luki) is the name given in Akkadian sources to a city in the ancient Near East whose locations is unknown. Its god is Numushda with his consort Namrat. There are indications that the god Lugal-awak also lived in Kazallu. History

Third Millennium BC
Under its king Kashtubila, Kazalla warred against Sargon of Akkad in the 24th or 23rd century BC. Sargon laid the city of Kazalla to waste so effectively that "the birds could not find a place to perch away from the ground." It must be noted that this particular story was written a millennium or more after the fact and is considered a literary composition. The
second ruler of the Akkadian Empire, Rimush, suppressed a revolt by Kazallu reporting:

A number of land grant inscriptions, the predecessors of Kudurrus, from the reign of Manishtushu the third king of the Akkadian Empire, mention feasts occurring in Kazallu and people from Kazallu. Kazallu also joined the "great revolt" led by Kish against the 4th Akkadian ruler Naram-Sin. Naram-Sin crushed the revolt and in an inscription mentioned defeating "Puzur-Numusda, governor of Kazallu". It is unclear how that governor relates to the one under Ur III. The city was briefly under the control of Elam under Puzur-Inshushinak until Elam fell to Ur with the first Ur III ruler, Ur-Nammu writing "Then: Umma, Marda, Šubur, Kazallu, and their settlements, and whatsoever was oppressed by Anšan, verily, I established their freedom". Under the Ur III empire, the city was ruled by ensi (governors). Some of them, Ititi (appointed in 28th year of Shulgi), Izariq (S31), Kallamu (S43), Šu-Mama (S47), and  Apillaša (appointed in year 7 of Amar-Suen continuing until at least year 5 of Shu-Sin), are known by name. It has been suggested that Su-Mama and Apillaša had a period of co-regency. There is a letter from Ibbi-Sin, the last ruler of Ur III, and Puzur-Numušda 1 who he had made governor of Kazallu, complaining that he (Girbubu, governor of Girkal, a city associated with Kazaalu in a geographic list) was not doing enough to oppose Ishbi-Erra, ruler of Isin. A notable letter sent to Ibbi-Sin reads:

Old Babylonian period
In the Isin-Larsa period, between the fall of the Ur III empire until Hammurabi finally establishes supremacy for Babylon in the region, Kazallu is often mentioned in the conflicts of that time. In the early 2nd millennium BC the city had a number of conflicts with Larsa. A year name of Sin-Iqisham records "Year (Sin-iqiszam) made (statues) of / for Numuszda, Namrat and Lugal-apiak and brought them into the city of Kazallu". The 2nd year name of Warad-Sin reads "Year the city wall of Kazallu was destroyed and the army of Mutibal occupying Larsa was smitten by weapons". Larsa ruler Kudur-Mabuk also reports repelling the forces of Kazullu. A ruler of Isin, Erra-imitti, also claimed to have destroyed Kazullu. And Rim-Anum, ruler of Uruk, reports in a year name "Year in which Rim-Anum the king defeated the land of Emutbal, the troops of Esznunna, Isin and Kazallu who marched together against him to make booty ... which was not counted since ancient times ... and defeated them". Kazallu briefly became a city-state in its own right before falling to Babylon. The 13th year name of Babylonian ruler Sumu-abum lists the destruction of Kazallu. After the fall of the First Babylonian Empire the city of Kazallu is no longer recorded in history. Location
According to a tablet from the reign of Gudea of Lagash, Kazalla was located somewhere to the west of Mesopotamia, in the land of Martu. According to a letter to Ibbi-Sîn the Martu were hindering travel between Ur and Kazallu. Some scholars today believe it was only about 15 km from the city of Babylon, and just west of the Euphrates. In texts from Drehem the city is said to be to the east of the unlocated city of Girtab. Old Babylonian records have it as being in the area of Marad (modern Tell as-Sadoum). Another researcher has suggested that Kazallu can be found "in the area east or southeast of Dilbat". And yet another "likely modern Azragiya on the Euphrates located 4 kms northwest of
Fallujah". See also
Cities of the ancient Near East
List of Mesopotamian dynasties

References

Former populated places in Southwest Asia