What happened was that South Egypt and the North Egypt had a war and the winner of the war wore both crowns.
Pharaohs wore the royal Deshret (Red Crown), Hedjet (White Crown), Peshent (Red and White Crown), Khepresh (Blue Crown) and Nemes (Head-Cloth Crown). The queens wore Cap-Crown or other fancy headdresses).
The double crown is the crown that ancient Egyptian Pharaohs wore after lower (Northern) and upper (Southern) Egypt were united under one ruler.
Crown of Ancient Glory was created in 1987.
The significance is that his crown symbolized the kingdom's unity ( Upper and Lower Egypt), he wore a double crown: the helmet-like white crown represented Upper Egypt, and the open red crown represented Lower Egypt.
Underground Crown Holders was created on 2005-05-23.
The colors of the double crown were white and red.
Double Crown Resources.....symbol is DDCC.
Your Crown was created in 1999.
Crown Him was created in 1991.
Pharaohs wore the royal Deshret (Red Crown), Hedjet (White Crown), Peshent (Red and White Crown), Khepresh (Blue Crown) and Nemes (Head-Cloth Crown). The queens wore Cap-Crown or other fancy headdresses).
Defenders of the Crown was created on 2003-08-25.
Wizard's Crown was created in 1985.
For the Crown was created on 1913-09-18.
Crown Group was created in 1978.
Crown Holdings was created in 1892.
Pearls of the Crown was created in 1937.
Crown of Castile was created in 1230.