Why does chaldeans call them self babylon

 The Chaldean's were people who lived in southern Babylonia which would be the southern part of Iraq today. Sometimes the term Chaldean's is used to refer to Babylonians in general, but normally it refers to a specific semi-nomadic tribe that lived in the southern part of Babylon. The land of the Chaldean's was the southern portion of Babylon or Mesopotamia. It was generally thought to be an area about 400 miles long and 100 miles wide alongside of the Tigris and Euphrates Rivers.

Yes all of them are right