What happened after Cambyses death?

After Cambyses II's death in 522 BCE, the Achaemenid Empire faced a power vacuum and subsequent instability. Darius I, a distant relative of Cambyses, seized control, claiming the throne by defeating rival pretenders, including a figure known as Bardiya or Smerdis. Darius then consolidated his power, implementing significant administrative reforms and expanding the empire further. His ascension marked the beginning of a more stable period for the Persian Empire, which would last through his reign and beyond.