Final answer:
Xerxes I and Darius were Persian kings who both sought to conquer Greece, played a role in the Persian Wars, and killed rivals to become king. They also contributed to the expansion and downfall of the Persian Empire.
Step-by-step explanation:
Xerxes I and Darius were both Persian kings who played significant roles in the Persian Wars against the Greek city-states. They shared similarities in their ambitions to conquer Greece and their involvement in the downfall of the Persian Empire.
Xerxes I, the son and successor of Darius, launched an invasion of Greece in 480 BCE. He assembled a large fleet and army in an attempt to subdue all the Greek city-states. Similarly, Darius also assembled forces to invade Greece in 490 BCE, but his forces were defeated in the Battle of Marathon.
Both Xerxes I and Darius engaged in killing rivals to secure their position as king. Darius faced rebellions and had to put them down to establish control over the Persian Empire. Xerxes I, on the other hand, faced opposition within his empire and had to maintain control through force.
In terms of conquering the Persian Empire, both Xerxes I and Darius played significant roles. Darius initially rose to power and reorganized the empire into twenty districts called satrapies. Xerxes I succeeded Darius and continued the expansion of the empire through his invasions and conquests.
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