He worked as an artist for the Medici in Florence, Corvinus in Hungary, and Pope Leo X; a civil engineer for Ludovico in Milan and Ottoman Sultan Beyazid II
in Constantinople; a military architect in Venice; a cartographer for the family of Pope Alexander VI; an anatomist with Marcantonio della Torre in Pavia and Padua; and finally, as a military and civil engineer for Francis I of France, who captured Milan and took Leonardo back to France as a valuable trophy of war.
Aunque pertenecia a una rama islamista ortodoxa, el emperador Beyazid II
, conocido como "El justo" (1481-1512) ordeno que la Armada otomana se dirigiera a la Peninsula Iberica en busca de los sefarditas expulsados.
In that incident, the Turkish sultan, Beyazid II
, accepted Jews into the Ottoman Empire, the predecessor of modern Turkey, after they had been expelled from Spain.