After his mother succeeded Radama I on the throne, she instituted an increasingly regressive regime that attempted to restore traditional values and contain or eliminate westernization. The prince, however, who had been highly influenced by the French adviser to the queen, Joseph-François Lambert, was favorably impressed by European culture, knowledge and its state of economic, political and technological development, and was troubled by some of the socially repressive policies pursued by Ranavalona I. According to a British account, the French played on this sympathy in 1855 by pressuring Prince Rakoto into signing a request for French aid that would have enabled France to establish control over Madagascar had the true nature of the letter and its signing not been uncovered by Rakoto and his British contacts. An alternate explanation was offered by Lambert, who maintained that the prince had knowingly supported the attempt to put an end to his mother's harsh policies, and was a willing collaborator in a failed 1857 plot to remove her from the throne.