History of ballet
Ballet originated in the Renaissance court as an outgrowth of court pageantry in Italy, where aristocratic weddings were lavish celebrations. Tutus, ballet slippers and pointe work were not yet used. The choreography was adapted from court dance steps. Performers dressed in fashions of the times. For women that meant formal gowns that covered their legs to the ankle. Early ballet was participatory, with the audience joining the dance towards the end.
La Scala Theatre Ballet
Although the company was only founded officially after the inauguration of the "Teatro alla Scala" in 1778, its history can be traced back to Renaissance courts of Italy, notably in the Sforza family’s splendid palace in Milan, where the classical ballet itself was born as an art form to be later refined at the French court of Louis XIV. 
The first nucleus of the company was brought to Milan by the choreographer Gasparo Angiolini between 1779 and 1789, as part of his reform of serious opera. Milan was also home to Salvatore Viganò, who experimented his personal interpretation of ballet "d’action" (which he called “coreodramma”); this in turn later inspired Carlo Blasis and other choreographers.