The Nephite reference article from the English Wikipedia on 24-Apr-2004
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Nephite

In the Book of Mormon, the Nephites are a race of people descended from Nephi, a prophet who traveled with his family from Jerusalem to the Western Hemisphere circa 600 B.C. at the urging of God. The Nephites, initially a righteous people, eventually fell into wickedness, and they were utterly destroyed by their rivals the Lamanites circa A.D. 400.

Most members of the Church of Jesus Christ of Latter-day Saints believe in the historicity of the Nephite race. However, some mainstream archeologists claim that there is no evidence that this race ever existed. The Mormon university Brigham Young University does archeological research in this area, specifically FARMS organization.