persian gulf region

• • after the prophet muhammads death, the caliphates extended territory and made baghdad the capital and heart of global trade 
• • badghad had easy acess towards the Persian gulf region, the Mediterranean sea, and the northern passage of the silk road
• • in 1258, the mongols attacked and destroyed baghdad, but the trading system already spread knowledge throughout the world
  • trade managed to rebuild the city 
  • commerce managed to expand through the port city of Barsa, which was in the Persian Gulf region