Bible Encyclopedias
Susa (2)

Cyclopedia of Biblical, Theological and Ecclesiastical Literature

or those of the country (Susis or Susiana) of which Susa was the capital. Perhaps as the Elamites are mentioned in the same passage, and as Daniel (Daniel 8:2) seems to call the country Elam and the city Shushan (or Susa), the former explanation is preferable. (See SHUSHAN).

Bibliography Information
McClintock, John. Strong, James. Entry for 'Susa (2)'. Cyclopedia of Biblical, Theological and Ecclesiastical Literature. https://www.studylight.org/​encyclopedias/​eng/​tce/​s/susa-2.html. Harper & Brothers. New York. 1870.