* How significant were individuals in the Anglo-French diplomatic relationship between 1715 and 1815?
I'd say pretty damned significant.
You can't a diplomatic relationship unless you have two countries
You can't a country without a group of individuals.
You can't have a war, no less a hundred year war, without armies.
You can't have an army without a bunch of individuals.
So individuals are important, without them you got nothin'