'Nations' in the Bible

Then one of the king's criers said in a loud voice, To you the order is given, O peoples, nations, and languages,

Nebuchadnezzar the king, to all the peoples, nations, and languages living in all the earth: May your peace be increased.

And because of the great power he gave him, all peoples and nations and languages were shaking in fear before him: some he put to death and others he kept living, at his pleasure, lifting up some and putting others down as it pleased him.

Then King Darius sent a letter to all the peoples, nations, and languages, living in all the earth: May your peace be increased.

And to him was given authority and glory and a kingdom; and all peoples, nations, and languages were his servants: his authority is an eternal authority which will not come to an end, and his kingdom is one which will not come to destruction.