From
Weavers, Scribes, and Kings: A New History of the Ancient Near East:> a few decades later King Enmetena of Lagash (c. 2450 BCE) was still fighting Umma over the same territory. Fortunately for historians, he wrote a long summary of the conflict, setting his own actions in the context of decades of what seem, in retrospect, to have been rather futile wars. This is one of the earliest attempts anywhere at writing a history of events.
> He started his history not with the life of his great-grandfather King Ur-Nanshe, but with the gods. According to King Enmetena, it had been the god "Enlil, king of all the lands, father of all the gods" who had "fixed the border (between the god) Ningirsu and (the god) Shara," meaning the border between the kingdoms of Lagash and Umma. The border had not been created by men; it had been the work of Enlil himself, the greatest of all gods. This obviously meant that it had to be maintained just where the god had set it and it had to be protected from movement. And so, as he described it, one Lagash king after another had attempted to do just that, against what they saw as the dastardly incursions of the kings and armies of Umma.
> No doubt the kings of Umma saw things differently.
Royal inscriptions [anywhere] and, in the ancient Mesopotamian context, year names, are generally not viewed as particularly accurate sources of information about what happened during the events they commemorate. Later in the book there is a discussion of a king who issued a year name memorializing his conquest of a city on his borders; meanwhile, documents formalized in that city continued to use the year names issued by an entirely different king.