 Thus, the birth of Maria Theresa was a great disappointment to him and the people of Vienna; Charles never managed to overcome this feeling.Maria Theresa replaced Maria Josepha as heir presumptive to the Habsburg realms the moment she was born; Charles VI had issued the Pragmatic Sanction of 1713 which had placed his nieces behind his own daughters in the line of succession.Charles sought the other European powers' approval for disinheriting his nieces.