Who did the Persian Empire conquer?

The Persian Empire, particularly under the Achaemenid dynasty, conquered a vast array of territories, including the Median Empire, Lydia, and Babylon. It expanded further into regions such as Egypt, parts of the Indus Valley, and Thrace, ultimately controlling a diverse range of cultures and peoples across three continents: Asia, Africa, and Europe. Notable conquests included the defeat of the Babylonian Empire in 539 BCE, which allowed the Persians to gain control of key trade routes and resources.