How did Cyrus the great held his growing empire tighter by?

Cyrus the Great held his growing empire together through a combination of effective governance, respect for local customs, and strategic military prowess. He implemented a policy of tolerance, allowing conquered peoples to maintain their own religions and traditions, which fostered loyalty and stability. Additionally, he established a network of satraps (governors) to oversee different regions, ensuring efficient administration and communication. This blend of respect, strategic governance, and military strength helped maintain unity in his vast empire.