Final answer:
The Persian Empire took shape in the 6th Century BC and was known as the Achaemenid Empire.
Step-by-step explanation:
The Persian Empire took shape in the 6th Century BC.
According to historians, the Persian Empire, also known as the Achaemenid Empire, was established in the second half of the 6th century BCE. The Persians, also called the Achaemenids, created an enormous empire that spanned from the Indus Valley to Northern Greece and from Central Asia to Egypt.