Original: The Seleucid Empire was centered in the near East and at the height of its power included central Anatolia , the Levant , Mesopotamia , Persia , today 's Turkmenistan , Pamir and parts of Pakistan .
Simplified: At its greatest extent , the Empire comprised central Anatolia , the Levant , Mesopotamia , Persia , Turkmenistan , Pamir and the Indus Valley .