Kayka'us I came to power after imprisoning his brother Kılıç Arslan III and secured his legitimacy partly through a calculated submission to the Abbasid Caliph al-Nasir, from whom he received formal investiture in 1213. His reign saw the Sultanate of Rûm reach genuine regional dominance following the decisive defeat of the Armenian Kingdom of Cilicia and the capture of the port of Sinope in 1214 — the latter giving the sultanate its first direct Black Sea access.
Copper fals of this period circulated in local Anatolian markets where silver was too valuable for small transactions. Sinope's capture almost certainly expanded the geographic reach of such issues.
Kayka'us I came to power after imprisoning his brother Kılıç Arslan III and secured his legitimacy partly through a calculated submission to the Abbasid Caliph al-Nasir, from whom he received formal investiture in 1213. His reign saw the Sultanate of Rûm reach genuine regional dominance following the decisive defeat of the Armenian Kingdom of Cilicia and the capture of the port of Sinope in 1214 — the latter giving the sultanate its first direct Black Sea access.
Copper fals of this period circulated in local Anatolian markets where silver was too valuable for small transactions. Sinope's capture almost certainly expanded the geographic reach of such issues.