Abstract
One of the most important and controversial prehistoric cultural periods is Proto Elamite period, which can be considered as a revolution in the development, growth and development of communication and interaction of the people of that period, in the period of 3300 to 3000 B.C Many changes took place in this golden age, which itself is due to the existence of political and social complexities. During this period, livestock unions were formed, which had an Proto Elamite  writting on the inscriptions of this period. The union’s livelihood was based on animal husbandry. The economies of monogamous and farming communities are fully integrated with the livestock nomadic economy, and farmers are therefore the direct economic dependents of nomadic unions. Of course, it goes without saying that nomadic ranchers also need farmers, but this was not always the case. Farmers provided some of the farmers’ grains, but the farmers continued to cultivate. They usually had rainfed agriculture. But in general, the most important livestock economy is herding, and farmers needed to migrate to find forage, and on the other hand, the very hot weather in the area of Susa was not tolerable for livestock, and farmers had to migrate to colder areas. The inscriptions are very important in this cultural period. Inscriptions changed from counting mode to scrolls for managing office and animal documents that were thought-provoking. One of the most significant areas of the fourth millennium BC is the area of Susa, which in this period has a lot of livestock inscriptions. In this article, the authors try to analyze the type and number of livestock inscriptions, the existence of a nomadic union, and subsequently the bipolarity of the Susa community in the early Elamite period.
Keywords: Fourth Millennium BC, Proto Elamite, Susa, Animal Husbandry, Inscription.

Introduction
Proto Elamaite refers to a period in history that chronologically shows 14 carbon samples obtained from millions of times between 3300 and 3000 BC.( Dahl et al, 2013: 358). But the end of this cultural period is not very clear yet (Pats, 1396: 99). Today, there are various sites from this period in Iran, some of which have been excavated, but according to the excavated sites, it covers a large part of the Iranian plateau, and so far 8 of its sites have been identified with an integrated writing standard.some of them like 1. Susa (Vallat, 1971) 2. Sialk (Ghrishman, 1938: XXXI) 3. Tal Geser (Alizadeh, 2014). Proto Elamite writing has an integrated structure in terms of form, writing and in terms of illustrating the ideas of the drawings. For example, in the field of animal texts, all of them have used a series of common or close signs, and in most cases, all of them have shown the difference between male and female goats, male and female sheep, and lambs with a single sign .Also, the same collection counting system is used.
Objective: To study the duality of the population of Susa (monogamous and nomadic) in the fourth millennium BC is based on the inscriptions of Proto Elamaite period, based on which it can be seen that Susa in Proto Elamate period is a bipolar society. Indigenous and probably in the same language, the Mesopotamian family is in the south of the Acropolis hill of Susa and a farming and pastoral community in the north of the Acropolis hill. Each nation provided the economic market for the other.
Research Questions: Has a union of animal husbandry communities been formed in Iran during Proto Elamaite period? Was Susa a community, farmer and cattle breeder in the Proto Elamite period?? What cultural connections have there been between livestock and monogamous communities?
Hypothesis: Considering the similarity of the structure and texts of Proto Elamite in the Iranian plateau, it can be seen that there was a connection between these areas and since the most consistency in the signs as well as the areas found in the herd. Early Elamite writings are related to animal texts, it can be seen that the livestock community may have played a role in this collection. These livestock communities in southwestern Iran were in close contact with Susa to meet their material needs, and probably half of Susa communities were forced to migrate to the highlands due to the large number of livestock in the warmer months of the year.
Research Method: In this research, the aim is to reconstruct the herdsman community living in the Susa area in the second half of the 4th millennium BC, which according to the statistical analysis of the number of livestock tablets compared to other Proto Elamite texts, shows that the most Note that these tablets have livestock provisions. In fact, it is possible to understand the type of livelihood of the Sush community in the Proto Elamite period from reading the tables, which is that the people of Sush were cattle breeders in the north of the hill and farmers in the south of the hill. The tablets obtained, which are mentioned in the research proposal, how to discover and decipher them, are very effective in achieving the goal of this research.

Proto Elamite inscriptions obtained from Susa
Proto Elamite inscriptions were first found in the excavations of Susa in 1900. (De Morgan, 1900: 130) Inscriptions are flattened clay fragments made by hand. They have formed. And are cooked at low heat or not cooked at all. In their study, the authors divided the Elamite inscriptions from Susa into two categories. One is the texts obtained from MDP.17, most of which were found from the north of Susa hill, and the other is the rest of the Susa inscriptions, which are generally obtained from the south of Susa hill. Demorgan’s large trench in MDP.6 had less than 10 percent of the animal texts But MDP.17 has the highest percentage of livestock statistics

Animal Texts of Susa
The content of all Elamite texts is administrative and related to the production, storage and distribution of the product (Dahl, 2015). In Proto Elamite texts, various signs are used for animals and livestock, but among them, only the sign of sheep and goat can be recognized with complete certainty due to the similarity with the example of the beginning of cuneiform can be distinguished from other animal signs. All livestock and domestic animal signs used in the herd are shown with abstract signs. Also, one of the most important factors related to livestock communities is the use of signs of livestock products.

Conclusion
Today, in the southwest of Iran, there are nomadic communities that have land in summer and winter, and apart from animal husbandry, whose main occupation is seasonal and rainfed agriculture, which does not meet the consumption of the whole year. And trade in livestock products and grains with the surrounding farming communities, and since the life of nomads depends on climate and environment, and since the end of the fourth millennium BC, major changes in water conditions and the weather in southwestern Iran has not happened. It is possible that the life of the nomads in Proto Elamite period was the same as now. By examining Proto Elamite tablets of Susa, it can be found that a significant part of them (nearly one third of the texts) are concepts related to wages, payment and in the field of livestock activity or collection and audit of livestock, and Attention is also regular with agricultural activity or payment of wages. By classifying the tablets and also according to the statistical concepts and percentages, it is determined that more than 32% of Proto Elamite texts obtained from Trench I of Domkenam in the north of the Acropolis hill are directly related to the counting and trading of livestock and may be part of the payment inscriptions whose goods Not specified, also related to livestock. According to Domkanem’s explanation, part of the inscriptions of the Great Trench of Damurgan is probably related to the texts of grain, storage and payment of labor wages, and at the time of publication, it was merged with a part of the tablets of the Great Trench in other Sush collections such as the book MDP.17 It has been reported that if they are separated, the number of livestock in the north of Shush Hill will probably reach a much higher number than %32. which in general can be understood the livelihood and life of the people of Susa in Proto Elamite period.