The Seleucid Army in Syria had elephants and the Ptolemiesin Egypt had none. On top of this, the Seleucids had trade incomeoriginating with an Arab tribe known as the Gerrheans. This tribelived on the Arabian cost of the Persian Gulf. They used smallships to travel along the coast, until they reached southern Arabia,and also northern India. From India they purchased goods, andthen sailed back and up the Euphrates River, eventually unloadingthe goods and sending them across land to Damascus. From Arabiathey brought incense. This maritime coastal sea route had existedfrom antiquity, and is first recorded for us in the annals ofUr of the Caldeese.


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