Which of the following is true of the Hellenistic kingdoms that replaced Alexander the Great's empire?

While the Diadochi did establish their own reigns, they did not restore the previous royal families that existed before Alexander's conquests. Instead, they replaced the local rulers with themselves and their descendants, consolidating control over their newly formed kingdoms.

The Hellenistic kingdoms were characterized more by autocratic rule rather than by the democratic institutions found in Greek city-states. While some cities maintained democratic practices, the overall governance of the kingdoms was centralized and controlled by the ruling elite, rather than by democratic principles.

The Hellenistic kingdoms were primarily influenced by Greek culture and philosophy rather than Zoroastrianism, which is a religion originating from ancient Persia. While Zoroastrianism remained significant in parts of the former Persian Empire, it did not play a central role in the governance or culture of the Hellenistic realms.

The Hellenistic kingdoms were eventually incorporated into the Roman Empire as it expanded. Many of these kingdoms, such as the Seleucid Empire and Ptolemaic Egypt, fell to Roman conquest, indicating that they were not powerful enough to resist Roman domination.