عنوان مقاله [English]
The Country¢s divisions is the process of country¢s space break to smaller units in order to easier governing, better security, and improving social and economical conditions. In fact, it is one of the most important implementations that governments use in order to managing the country¢political environment. In Iran, the country¢s divisions has a long history. It came back to the first kingdom of Iran (Achaemenid Empire) and continues unit now. Governments use this to better governing of the country¢s region. We can see that in this long history (about 2500 years) many factors such as Country¢s geographical extent, region¢s natural traits.Dispersal and diversity of races, descents and religions, military issues, urban centers and etc. Have had influenced country¢s divisions. In resent period factors such as ecological minorities, strategic environment, country¢s peripheral regions etc. Also have influence in this field. It is clear that these factors do not have equal influences on creation of smaller political andministerial units in different periods. Therefore, in this paper we divided these factors in two periods : first, ancient period that starts from first kingdom and continues until the first Country¢s divisions law in 1285. The second one is modern that starts from the first Country¢s divisions law and formation of intensive and comprehensive government and continues until now. In each of these two periods many contrary and varied factors affected country¢s divisions, but the most important factor in ancient period was country¢s geographical extent, and in modern period is intensive form of government.