The reign of Elizabeth II has been the longest in British history. https://www.gresham.ac.uk/lectures-and-events/queen-elizabeth-ii
It has coincided with the transformation of the mystical monarchy into a welfare monarchy, and the development of a multi-racial Commonwealth, which currently comprises 54 independent nations and nearly a third of the world's population. The Crown has grown stronger both at home as a symbol of the nation, and in the Commonwealth as a symbol of a diverse group of countries nations co-operating together for the common good.
The transcript and downloadable versions of the lecture are available from the Gresham College website: https://www.gresham.ac.uk/lectures-and-events/queen-elizabeth-ii
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