Economic approach of Nizam al-Mulk relying on Siyar al-mulûk

The attack of the Seljuk Turks affected Iranian society and economy and caused an economic downturn of the society for some decades. Nizam al-Mulk Tusi (408-485 AH) was one of the Iranian bureaucrats during the Seljuk period who had valuable experiences of the economic and peasant traditions of Iran and by writing Siyar al-mulûk took an active approach and action in both the theoretical and practical fields about issues and challenges of his era. The main question of the research is what were the most important economic approaches of Nizam al-Mulk in the Seljuk court and military structure based on Siyar al-mulûk? The result of the research indicates that the most important theoretical and practical approaches of Nizam al-Mulk in the economic structure of the Seljuk government were monitoring the country's expenditure and the financial performance of the officials, the bureaucrats, and the judges, the necessity to pay attention to the rights and livelihood of the peasants and masses, preventing the bribery of doorkeepers and judges, improving the livelihood and the necessity to increase the military budget, the necessity of imposing taxes on conquered lands, supporting state and governmental ownership in a broad way and private ownership in a limited and conditional way.