Cyrus the Great led the Persian army to victory over the Babylonian Empire in 539 BC, conquering Mesopotamia and establishing the Persian Empire.

Persepolis was the ceremonial capital of the Persian Empire, located in what is now Iran. It was built by Darius I and served as the administrative center of the empire.

Darius I, also known as Darius the Great, expanded the Persian Empire to its greatest extent and ordered the construction of the Royal Road, a network of roads connecting the empire's major cities.

The Persian Empire was divided into provinces called satrapies, each governed by a satrap appointed by the king. Satraps were responsible for collecting taxes, maintaining order, and administering justice.

Darius I launched an invasion of Greece in 490 BC but was defeated by the Athenians at the Battle of Marathon, marking a turning point in the Greco-Persian Wars.

Xerxes I, the son of Darius I, led the second Persian invasion of Greece in 480 BC. He burned Athens but was eventually defeated by the Greeks at the Battle of Salamis.

Artaxerxes I, also known as Artaxerxes Longimanus, implemented several reforms during his reign, including the promotion of Zoroastrianism as the official religion of the Persian Empire.

Seleucus I Nicator, one of Alexander the Great's generals, revolted against Artaxerxes III and founded the Seleucid Empire, which ruled over much of the former Persian territories.

Darius I ordered the construction of the Apadana, a magnificent audience hall at Persepolis, which served as a symbol of Persian power and grandeur.

Atossa, the mother of Xerxes I, is believed to have played a significant role in convincing him to launch the second invasion of Greece.

Cyrus the Great is credited with the construction of the Tomb of Cyrus the Great, an iconic monument located in Pasargadae, Iran.

Harpagus, a Median general serving under Cyrus the Great, led the Persian forces to victory in the Ionian Revolt, suppressing the rebellion of Greek cities in Ionia.

Xerxes I launched an invasion of Egypt in 486 BC but was ultimately defeated by the Egyptian forces, marking a significant setback for the Persian Empire.

Pharnabazus, the satrap of Hellespontine Phrygia, rebelled against Artaxerxes II and declared independence, ruling over a kingdom in Asia Minor.

Artaxerxes I signed the Peace of Callias with the Greek city-states in 449 BC, formally ending the Greco-Persian Wars and establishing a period of relative peace between the two sides.