Ancient Egypt's Late Period occurred between 664 – 332 BCE. According to the map below, the Persian Empire was in existence at the same time ancient Egypt's Late Period.
The name Persian Empire refers to a series of dynasties located in what we know today as Iran and protracted several centuries—from the sixth century B.C. to the twentieth century A.D.
During their first period of the Persian Empire, which spanned from 550 BC until 330 BC, also known as the Achaemenid Empire, they conquered several nations and expanded their territory.