So they wouldn't rebel
Becuase cyrus let the people he conquered keep thier own customs.
So only a few people rebelled
because he had fun "doin" it
Yes, Cyrus the Great let conquered people to keep their own customs in the hope that his would make them less likely to rebel.
They didn't seldom rebel because he let them keep their own customs
the Incas allowed the conquered people keep their religious beliefs
their religion
His object was not to turn these people into Persians. It was to establish security and prosperity in Western Asia. This was best achieved by establishing Persian regional governors to oversee internal and external security and plan and promote prosperity, and to leave the local peoples to continue to run their government and economies, and continue their cultural practices.
They allowed the conquered people to keep their religous beliefs.
haider Mongol rulers did however rule with some tolerance allowing conquered people to keep their religions
Alexander The Great
Cyrus the Great actively reached out to minorities and tribes in the areas he conquered and gave them a stake in the local government and the maintenance of their holy places. Since Cyrus' Empire did not seek to quash minority rights, but improve them, the conquered people aligned with the government forces, leading to general peace and security within the Persian Empire under his rule. Some modern governments might learn something from his example.