'Governors' in the Bible

I said to the king, "If the king is so inclined, let him give me letters for the governors of Trans-Euphrates that will enable me to travel safely until I reach Judah,

Then I went to the governors of Trans-Euphrates, and I presented to them the letters from the king. The king had sent with me officers of the army and horsemen.

But the former governors who preceded me had burdened the people and had taken food and wine from them, in addition to forty shekels of silver. Their associates were also domineering over the people. But I did not behave in this way, due to my fear of God.