"I am reminded that our nation's history has been forged by people and communities coming together to work as one, concentrating our combined efforts with a focus on the common goal," she said in a statement issued by Buckingham Palace.
"Now more than any time in our recent past, we all have a vitally important part to play as individuals - today and in the coming days, weeks and months.
"I am certain we are up to that challenge. You can be assured that my family and I stand ready to play our part," she added.

Copyright Agence France-Presse, 2020