Why was it important that cyrus the great let conquered people keep their own languages. religions and laws?

Cyrus led a revolt against the Median Empire and by 549 BC he had completely conquered Media. He now called himself the "King of Persia." ... In 540 BC, after routing the Babylonian army, Cyrus marched into the city of Babylon and took control. He now ruled all of Mesopotamia, Syria, and Judea.

lack of land area is one of the things not mentioned that has contributed to the poor transportation and communication systems in nicaragua.