In MY BOOK OF BIBLE STORIES (1978), chapter 27, the WBTS give the impression to readers, that Israelites, participated in building Egyptian Pyramids. Also, THE WATCHTOWER - November 15, 1987, page 30, raises the two following questions: "Do the pyramids of Giza (near modern Cairo) bring to mind abused slaves toiling under hot sun to drag huge stones into place? And do you imagine Hebrew slaves among them?" But did Hebrew slaves participated in their building?
While reading the NATIONAL GEOGRAPHIC, November 2001, pp. 78 - 99 (french edition), I came across the following interesting information.
The Egyptologist Zahi Hawass (Director of archaeologie at Giza), and archaeologist Mark Lehner (of Harvard University),conclude that the pyramids weren't constructed by slaves neighter by foreigners, but by Egyptian citizens.
The theory of "foreigners and slaves" orignated from Hérodote (450 BCE). In 1990, a discovery of a necropolis near the three big pyramids of Giza, proved Hérodote wrong.
Joe