In 1761, it was said that Nicolas Flamel and his wife had been seen beneath the arches of the Paris Opera, also known as the Garnier Opera. Two years later, in 1763, the opera house burned down in a great fire, and the entrance to the wizarding world was destroyed along with it.
Nicolas Flamel was not a sociable man. He was more devoted to research, and the reason he had been recognized at the opera house was probably that he had gone there to handle business in the wizarding world.
Thanks to an introduction from the head of the Lestrange family, Georgiana had met quite a few French pure-blood wizards. They had formed an organization similar to the Wizards' Council to temporarily handle wizarding affairs within France.
To establish a department, employees had to be paid. Armies needed wages too. Demanding that people serve without compensation was one of the reasons the feudal system had been overthrown. Sirius Black had received an Order of Merlin through a large donation, and Georgiana could do the same. On top of that, she needed to find land and an architect for the newly established Ministry of Magic. If she agreed to those terms, the "French Ministry of Magic" would purge those wizard rebels who carried out reprisals without regard for the consequences. Simply put, this was something money could solve.
Half of the six million Napoleon had given Georgiana as breakup money was taken from her at once, and that was only because those pure-blood aristocrats had "shown consideration" for her. Choosing a site could wait until after this war. If Napoleon died, there would be no point in making demands. Napoleon could confiscate the wealth of exiles, and the new rulers could do the same, unless they used a Concealment Charm