The Nazi theorist Alfred Rosenberg believed that the Nordic race was descended from Proto-Aryans, who he believed had prehistorically dwelt on the North German Plain and ultimately originated on the lost continent of Atlantis.[1] The Nazis declared that the Nordics (now referred to as the Germanic peoples), or Aryans as they sometimes called them, were superior to all other races. The Nazis believed they were entitled to expand territorially.[2] This concept is known as Nordicism.