Enshakushanna was a king of Uruk

Uruk

Uruk was an ancient city of Sumer and later Babylonia, situated east of the present bed of the Euphrates river, on the ancient dry former channel of the Euphrates River, some 30 km east of modern As-Samawah, Al-Muthannā, Iraq.Uruk gave its name to the Uruk...

 in the later 3rd millennium BC

3rd millennium BC

The 3rd millennium BC spans the Early to Middle Bronze Age.It represents a period of time in which imperialism, or the desire to conquer, grew to prominence, in the city states of the Middle East, but also throughout Eurasia, with Indo-European expansion to Anatolia, Europe and Central Asia. The...

 who is named on the Sumerian king list

Sumerian king list

The Sumerian King List is an ancient manuscript originally recorded in the Sumerian language, listing kings of Sumer from Sumerian and neighboring dynasties, their supposed reign lengths, and the locations of "official" kingship...

, which states his reign to have been 60 years. He conquered Hamazi

Hamazi

Hamazi or Khamazi was an ancient kingdom or city-state of some importance that reached its peak ca. 2500-2400 BC...

, Akkad

Akkad

The Akkadian Empire was an empire centered in the city of Akkad and its surrounding region in Mesopotamia....

, Kish

Kish (Sumer)

Kish is modern Tell al-Uhaymir , and was an ancient city of Sumer. Kish is located some 12 km east of Babylon, and 80 km south of Baghdad ....

, and Nippur

Nippur

Nippur was one of the most ancient of all the Sumerian cities. It was the special seat of the worship of the Sumerian god Enlil, the "Lord Wind," ruler of the cosmos subject to An alone...

, claiming hegemony over all of Sumer

Sumer

Sumer was a civilization and historical region in southern Mesopotamia, modern Iraq during the Chalcolithic and Early Bronze Age....

. He adopted the Sumerian

Sumerian language

Sumerian is the language of ancient Sumer, which was spoken in southern Mesopotamia since at least the 4th millennium BC. During the 3rd millennium BC, there developed a very intimate cultural symbiosis between the Sumerians and the Akkadians, which included widespread bilingualism...

 title en ki-en-gi lugal kalam-ma en ki in Sumerian means god of the Apsû , which may be translated as "lord of Sumer and king of all the land" (or possibly as "en

EN (cuneiform)

EN is the Sumerian cuneiform for "lord" or "priest". Originally, it seems to have been used to designate a high priest or priestess of a Sumerian city-state's patron-deity - a position that entailed political power as well. It may also have been the original title of the ruler of Uruk...

of the region of Uruk and lugal

Lugal

Lugal is the Sumerian cuneiform sign for leader from the two signs, LÚ.GAL , and was one of several Sumerian titles that a ruler of a city-state could bear . The sign eventually became the predominant Sumerian term for a King in general. In the Sumerian language, lugal is used to mean an owner...

of the region of Ur

Ur

Ur was an important city-state in ancient Sumer located at the site of modern Tell el-Muqayyar in Iraq's Dhi Qar Governorate...

"), and could correspond to the later title lugal ki-en-gi ki-uri "King of Sumer and Akkad" that eventually came to signify kingship over Babylonia

Babylonia

Babylonia was an ancient cultural region in central-southern Mesopotamia , with Babylon as its capital. Babylonia emerged as a major power when Hammurabi Babylonia was an ancient cultural region in central-southern Mesopotamia (present-day Iraq), with Babylon as its capital. Babylonia emerged as...

 as a whole.

He was succeeded in Uruk by Lugal-kinishe-dudu, but the hegemony seems to have passed to Eannatum

Eannatum

Eannatum was a Sumerian king of Lagash who established one of the first verifiable empires in history. One inscription of his, found on a boulder, states that Eannatum was his Sumerian name, while his "Tidnu" name was Lumma.-Conquest of Sumer:...

 of Lagash

Lagash

Lagash is located northwest of the junction of the Euphrates and Tigris rivers and east of Uruk, about east of the modern town of Ash Shatrah. Lagash was one of the oldest cities of the Ancient Near East...

 for a time. Lugal-kinishe-dudu was later allied with Entemena

Entemena

Entemena was a son of En-anna-tum I, and he reestablished Lagash as a power in Sumer. He defeated Illi of Umma, with the aid of Lugal-kinishe-dudu of Uruk, successor to Enshakushanna, who is in the king list.-Artifacts:...

, a successor of Eannatum, against Lagash's principal rival, Umma

Umma

Umma was an ancient city in Sumer. Note that there is some scholarly debateabout the Sumerian and Akkadian names for this site.-History:...

.