Abstract: In the second half of the 12th century (Arabic), great land of Iran went to the decentralization of government and the Iranian Monarchy became feudal practice. After approximately half a century, the centrifugal tendencies have subsided and people interested in the formation of large central power. Agha Mohammad Shah of Qajar era who had perceived lack of focus, thought about big centralization of power in Iran and establishing the Kingdom of Iran at least as the size of Safavid government. In this regard, he attempted integration of different areas including the Zand rule to the north of the Aras and Georgia as well as Khorasan and in this way, did the measures that thought should be done. He also established the institution of monarchy as a symbol of integrity that had vanished from the past half century.