Nizam al-Mulk

Nizam al-Mulk served as vizier to the Seljuk sultans Alp Arslan and Malik Shah for over 30 years. He centralized the administration, reformed the tax system, and built a network of roads and caravanserais, consolidating Seljuk power from Anatolia to Central Asia.

Nizam al-Mulk founded the Nizamiyya madrasa in Baghdad, a state-sponsored college for Sunni Islamic education. This institution standardized the curriculum for Shafi'i law and Ash'ari theology, becoming a model for madrasas across the Islamic world and strengthening Sunni orthodoxy.

Nizam al-Mulk reformed the iqta (land grant) system, assigning land revenues to military commanders in exchange for service. This system provided a stable income for the army and reduced corruption, but also laid the groundwork for feudal decentralization in later periods.

Nizam al-Mulk wrote 'Siyasatnama', a treatise on statecraft and governance for Sultan Malik Shah I. The work outlined principles of just rule, administration, and military organization, drawing on Persian and Islamic traditions, and became a classic of Islamic political thought.

Nizam al-Mulk was assassinated near Nahavand by a member of the Nizari Ismaili sect (the Assassins). His death removed the chief architect of Seljuk administration, leading to political instability and the decline of the Great Seljuk Empire under Malik Shah's successors.