Who among the following propounded the 'Saptanga' Theory of political rationality?

The 'Saptanga' Theory of State was propounded by Kautilya (also known as Chanakya or Vishnugupta) in his famous treatise, the Arthashastra. The theory describes the state as an organic body with seven limbs (angas): Swami (King), Amatya (Minister), Janapada (Territory/Population), Durga (Fort), Kosha (Treasury), Danda (Army), and Mitra (Ally).