section_path: Culture/Economy and trade
section_name: Economy and trade
paragraph_text: Economy and trade
  
  Discoveries of obsidian from far-away locations in Anatolia and lapis lazuli from Badakhshan in northeastern Afghanistan, beads from Dilmun (modern Bahrain), and several seals inscribed with the Indus Valley script suggest a remarkably wide-ranging network of ancient trade centered on the Persian Gulf. For example, Imports to Ur came from many parts of the world. In particular, the metals of all types had to be imported.
  
  The Epic of Gilgamesh refers to trade with far lands for goods, such as wood, that were scarce in Mesopotamia. In particular, cedar from Lebanon was prized. The finding of resin in the tomb of Queen Puabi at Ur, indicates it was traded from as far away as Mozambique.
  
  The Sumerians used slaves, although they were not a major part of the economy. Slave women worked as weavers, pressers, millers, and porters.
  
  Sumerian potters decorated pots with cedar oil paints. The potters used a bow drill to produce the fire needed for baking the pottery. Sumerian masons and jewelers knew and made use of alabaster (calcite), ivory, iron, gold, silver, carnelian, and lapis lazuli.