Ibn Khordadbeh
The Book of Roads and Kingdoms (, "Kitāb al-Masālik wa-l-Mamālik") is a 9th-century geography text by the Persian geographer Ibn Khordadbeh. It maps and describes the major trade routes of the time within the Muslim world, and discusses distant trading regions such as Japan, Korea, and China. It was written during the reign of Al-Mu'tamid in around 870 CE while its author was Director of Posts and Police for the Abbasid province of Jibal.