So? it's the same place----just like the land that the Romans decided to Rename PALESTINE---is really Judea and Israel. TheJoseph Smith's Book of Abraham, which he claimed was written by Abraham himself, repeatedly refers to the land of Chaldea and its inhabitants, the Chaldeans.
Problem is, there was no land of Chaldea or Chaldeans in Abraham's day. They didn't exist until more than a thousand years later.
Joseph Smith obviously made this mistake because he was deriving part of his Abraham story from Genesis 11 which mentions Abraham living in "Ur of the Chaldeans." The reason for this, however, is because the narrative of Abraham in the Bible was written, or at least edited, by later Jewish scribes who were referring to the place as it was known in their day, not in the time of Abraham.
Joseph Smith obviously didn't know this, and, as a result, created an anachronism as bad or worse than any in the Book of Mormon.
state of my childhood was once called the COLONY of---and before that-----no particular name at all ---the NEW WORLD. It is silly to get tied up in Semantics. Copts and Chaldeans are good people to know---they have a grasp on the history of the LEVANT uncorrupted by the islamic version thereof