Answer :
Final answer:
Cambyses put down revolts in the Persian Empire and expanded its territory by conquering Egypt.
Explanation:
Cambyses was a ruler of the Persian Empire who had a significant impact on the empire. He put down a number of revolts, ensuring stability within the empire. Additionally, he expanded the empire's territory by conquering Egypt, thereby increasing its power and influence. However, he did not build an extensive system of roads as this achievement is attributed to his father, Cyrus. Furthermore, he allowed the Jews to return to their homeland. Lastly, Cambyses renounced the religious tolerance of his father, Cyrus.
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