See the link in separate box below: 'Sources and related links'.
550 BCE.
A map of the Persian Empire is in the link in the separate panel Sources and related links below.
Amu Darya.
The Persian Empire.
The Persian Empire was not a person.
The Persian Empire, primarily located in the region of modern-day Iran, extended at its height from the northeastern parts of the Mediterranean to parts of Central Asia and the Indian subcontinent. On a map, it can be roughly identified in the area covering coordinates 25°N to 40°N latitude and 44°E to 60°E longitude. This expansive territory included significant regions such as Mesopotamia, parts of the Caucasus, and western Iran.
Persian Empire
Google: Persian War map.
The Persian Empire absorbed the Babylonian Empire.
Alexander the Great defeated the Persian empire
The Persian Empire absorbed the Baabylonian Empire.
The Persian Empire incorporated the Indus Valley.