sentence: about fifty countries carried out overseas trade with the song , among them ceylon , langkasuka , mait , samboja , borneo , kelantan , champa , chenla , bengtrao , java , india , calicut , lambri , bengal , kurum , gujara , mecca , egypt , baghdad , iraq , aman , the almoravid dynasty , sicily , morocco , tanzania , somalia , ryukyu , korea , and japan .