The Persian empire was established by Cyrus the Great in 6th century BC
550-330 BC
The Persian Empire (also known as the Achaemenid Empire) existed 550 to 330 BCE.
Alexander the Great invaded and conquered the Persian Empire in the year 334BC
There is not just one Persian Empire. There are several. If you are specifically referring to the Persian Empire of Cyrus the Great, Darius, and Xerxes, that empire was overrun by Alexander the Great between 334-324 B.C.E.
From 550 BCE.
550 b.C.
Nowruz.
550-350 bc
Around 550 BCE.
550 to 331 BCE.
The Greek city-states in Asia Minor within the Persian Empire revolted.
After uniting Persia and Media, he conquered the Babylonian Empire.