What happened November 1494 AD

Leonardo was employed on many other projects for Sforza, including the preparation of floats and pageants for special occasions, a drawing and wooden model for a competition to design the cupola for Milan Cathedral (which he withdrew), and a model for a huge equestrian monument to Ludovico's predecessor Francesco Sforza. This would have surpassed in size the only two large equestrian statues of the Renaissance, Donatello's Gattamelata in Padua and Verrocchio's Bartolomeo Colleoni in Venice, and became known as the Gran Cavallo. Leonardo completed a model for the horse and made detailed plans for its casting, but in November 1494, Ludovico gave the bronze to his brother-in-law (Ercole I d'Este, Duke of Ferrara) to be used for a cannon to defend the city from Charles VIII.

The uprising against Piero de' Medici took place in Florence.