Artaxerxes I was a king of the Achaemenid Empire who ruled from 465 to 424 BCE. He was the son of Xerxes I and Amestris, and he ascended to the throne after his father's assassination. His reign is noted for its relative peace and stability, as well as for the continuation of the empire's administrative practices. During his rule, Artaxerxes I faced challenges, including revolts in Egypt and conflicts with the Greeks. He is also known for his support of the arts and construction projects, including the completion of the Palace of Persepolis. His reign marked a significant period in Persian history.