The Lord was with him, and wherever he went he prospered. He rebelled against the king of Assyria and did not serve him.

Solomon sat on the Lord’s throne as king in place of his father David. He prospered, and all Israel obeyed him.

He was diligent in every deed that he began in the service of God’s temple, in the instruction and the commands, in order to seek his God, and he prospered.

For the shepherds are stupid:
they don’t seek the Lord.
Therefore they have not prospered,
and their whole flock is scattered.

So Daniel prospered during the reign of Darius and the reign of Cyrus the Persian.