apr 4, 1718 - Great Britain, France and the Dutch Republic agree on the phasing out of the authority of the House of Medici over the semi-independent Grand Duchy of Tuscany by declaring that Gian Gastone de' Medici will be the last of the Medici family to rule the Italian duchy and that Spain's House of Borbón will eventually control the Tuscan monarchy. Don Carlos of Spain, the two-year old son of King Philip V, is designated as the eventual heir, despite the objections of the 75-year old Grand Duke, Cosimo III de' Medi
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Date:
apr 4, 1718
Now
~ 306 years ago
