The paiza was a pass that certified that a holder of this title had granted the possessor tax exemption. A ruler with this title ordered the construction of a silver tree with four serpents as its roots for a fountain in a capital city visited by William of Rubruck. Decrees issued known as yarlighs were issued by holders of this title, many of whom expanded the yam route system. John the Hungarian was an ambassador between one holder of this title and Louis IX. One of this title's holders ordered the destruction of (*) Alamut, the base of the A
The paiza was a pass that certified that a holder of this title had granted the possessor tax exemption. A ruler with this title ordered the construction of a silver tree with four serpents as its roots for a fountain in a capital city visited by William of Rubruck. Decrees issued known as yarlighs were issued by holders of this title, many of whom expanded the yam route system. John the Hungarian was an ambassador between one holder of this title and Louis IX. One of this title's holders ordered the destruction of (*) Alamut, the base of the Assassins. The kurultai elected holders of this position, one of whom created a secret law code called the Yassa. A ruler with this title supposedly turned a river black with ink when he sacked Baghdad in 1258. For 10 points, identify this title held by numerous Karakorum-based Mongolian rulers, such as Hulagu and Genghis.
The paiza was a pass that certified that a holder of this title had granted the possessor tax exemption.