The Egyptians are still about today, but their empire was at its strongest from 1778-525 B.C.
They were the people that lived in the lower Nile valley and Nile delta. They were one of the great ancient civilisations and built the pyramids.
Some, but most are Arabs.
Hieroglyphics is the written way of communication for the Egyptians.
Ancient Egyptians believed whole-heartedly in their Gods and Goddesses. Just as Christians, Muslims, etc believe in their respective Gods and/or Goddesses. The reasons are the same for all religions...