'Realm' in the Bible

It pleased Darius to appoint 120 regional authorities over the kingdom throughout the realm,

Afterward, King Darius wrote to all nations, nations, and languages who lived throughout his realm: "May great prosperity be yours!

""The southern king will become strong, along with one of his officials, who will become stronger than he and rule over his own realm with great power.

Then he'll come against the realm of the southern king and then return to his own territory.