What is the commonly known name of the charter written by a Swiss-French political activist in 1815?
Charter of 1815: The Charter of 1815, signed on April 22, 1815, was the French constitution prepared by Benjamin Constant at the request of Napoleon I when he returned from exile on Elba. Charter of 1815:  More correctly known as the "Additional Act to the Constitutions of the Empire" the document extensively amended (in fact virtually replacing) the previous Napoleonic Constitutions (Constitution of the Year VIII, Constitution of the Year X and Constitution of the Year XII).
i don't know