sentences:  After a brief reign, Radama was strangled in an 1863 "coup d'etat" termed the Aristocratic Revolution.Radama's widow Rasoherina was placed on the throne by Prime Minister Rainivoninahitriniony and his cabinet on the condition that the absolute power of the monarch was ended and the majority of power over day-to-day governance and foreign affairs rested with the Prime Minister.The despotism of the prime minister led him to be replaced by his younger brother, Rainilaiarivony, who would govern Madagascar for 30 years until the capture of Antananarivo by the French military.