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Abstract
The cultural period of the Proto-Elamite, due to the entry of the Iranian plateau into another phase of the urbanization period and having a number of writings indicating the beginning of writing in this land, is an important stage in the historical beginning of Iran. Since then, the Elamite period has received much attention due to the creation of the first Dynastic governments on the Iranian Land. The Sequence of the Proto-Elamite to the beginning of the Old Elamite period is based on the Elamite text, with some ambiguities and based on some information and data, including the Elamite text, stop is considered, and its evolution until the time of Old Elam is questionable but the sequence mentioned in Mesopotamian texts can be traced and reviewed. A study was carried out with the aim of examining the name of Elam, its land and its states in the period from the Proto-Elamite to Old Elamite in Mesopotamian texts, and the most important question in this research is to find out how the succession of the Elamite to Old Elamite was based on Mesopotamian texts during this period. Research alongside archaeological data confirms the existence of the Elam and Elam states in the third millennium B.C in Mesopotamian linguistic texts obtained at this time. The Present study has a qualitative and strategic system and is based on fundamental goals and is descriptive in terms of methodology. The method of collecting the findings was done in a library manner and all of them were extracted from valid source. The base for further analysis relies on library information and findings.  
Keywords: Proto-Elamite, Old Elamite, Mesopotamia, Sumerian Texts.

Introduction
Proto-Elamite first found in Susa in Khuzestan, traditionally considered one of the capital of the Elam state. Identification of this cultural period goes back to the explorations of the Susa area in the late 19th and early 20th centuries. The texts of the beginnings of the third millennium Elam deal only with administrative, local matters and are the documents for the receipt and payment of grains, livestock’s and workers. After the Elamite period the volume of information and some of the features of this period have been excluded in some areas, the written documents do not clearly indicate the continuation of the course until the next stage, the Old Elamite. The Question in this study is how the succession of the Elamite to the Elamite period is based on Mesopotamian texts during this period. The excavations along with the archaeological findings confirm the existence of the name of Elam and its states in the third millennium B.C in the inter-linguistic texts obtained from this period. This research has a qualitative and strategic system and is based on descriptive method and with fundamental aims. The basis of further analysis relies on library information and findings.

Identified Traces 
The name of Ilam is clearly explored in Sumerian sources. Sumerian inscription from Mesopotamia around 2600- 2700 BC use the Sumerian legal NIM meaning king Islam, and these references can be traced back to the last king Avan and the Elamite tetts left over from the inscriptions of the Elamites themselves. The written from of the Islam land in the Sumerian cuneiform used the NIM .KI from which was spoken Elam (ma) the word NIM in Sumerian has several meanings, but because it is one of the NIM pronunciations in Akkadian elu, some orientalists have speculated that the word elam (ma) in sumerian elamtu in Akkadian must be an anonymous from of the verb root, and ilam   was called the high land. Vocabulary list of the names of the gods of discovered from AbuSelabiq in southern Mesopotamia names a god named leugal NIM. NIM implies the state of Ilam as used here, so god’s name can be called king of Ilam . Other linguistic evidence from Mesopotamia, including the myth of the Arath land, also confirms the expansion of commerce and consequently increased cultural exchange.
In this discussion they have documented linguistic evidence in two parts of the cuneiform and pseudo- cuneiform texts on the relationship between Ilam and Mesopotamia. The mountainous part of the east was so important to the inhabitants of Mesopotamia that the Sumerian word Nim has been used in the Mesopotamian texts of the Uruk period for mountainous areas , especially the mountaineers of the Iranian plateau. Although complex forms of writing were invented in southern Mesopotamia and south western Iran in the 4th millennium BC, but until about 2500 BC, we cannot say precisely on the basis of written texts about the history of the region. During this period, events are based on royal inscriptions. Elamite words are visible in both Elamite and non -Elamite sources, and the Elamite vocabulary has been documented since the second half of the third millennium BC, but little information is known about the Elamites. The resources available for the history of the early Mesopotamian dynasty provide little insight into the research on the history of Ilam. These sources. Which some times refer to Ilam, Report most of the scattered wars between Ilam and Mesopotamia in the third millennium BC, which can be seen in later periods. Ilam was the most important and powerful neighbor of summer during the third millennium BC and lang after that.

Conclusion
What the documented literary sources indicate is the existence of a cultural, economic and hostile relationship between the Proto-Elamite to the Old Elamite not only did the Elam States exist but they were powerful enough to defend themselves against Mesopotamian and even attack Mesopotamia.