Unification of Italy
The Piedmont revolt started
Alessandria, Italy
The Piedmont revolt started in Alessandria, where troops adopted the green, white, and red Tricolore of the Cisalpine Republic. The king's regent, prince Charles Albert, acting while king Charles Felix was away, approved a new constitution to appease the revolutionaries, but when the king returned he disavowed the constitution and requested assistance from the Holy Alliance.