King of Kedah

Kedah, also written as Queda, and known in the early days as Qalha, Kalah Bar, Kalah or Kalaha by the Arabs and Persians, Cheh-Cha, Ka-Cha by the Chinese and Kedaram, Kidaram, Kalagam and Kataha by the Tamils is an early kingdom on the Malay Peninsula and an important early trade centre. Early west-coast trade centres are few in number as they were overshadowed by Kedah. Her nearness to the entrances to the Straits of Malacca — and more importantly — being on latitude 6° north of the equator, the same as Ceylon to the south of India, meant that ships sailing the Bay of Bengal in a sea lane heading due east or west between the two were in little danger of becoming lost. The early transpeninsular routeway is part of the Sea trade route of the Spice Route for Arab, Persian, Tamil Nadu and India-to-China traders, as the route through the Straits does not seem to have been in general use. Early sea traders from the west, upon reaching the coast, engaged porters to transport goods by raft, elephant and man-carry along the rivers (Kelantan River, Pattani River, Pahang River, Muda River, Bernam River, Muar River, and others) to the opposite coast. The Sungai Muda in particular favoured the development of Kedah.

After the 7th century, Srivijaya subjugated Kedah, but due to her fame, Indian sources continue to depict Kedah. Early Kedah also supplied its own tin, and jungle products such as rattan, resin, honey, beeswax, elephants, ivory, areca nuts, sepang wood and black woods, as well as profiting from tax collections.

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Wikipedia