Stalin killed 20 million of his own people, historians have concluded.
Later, however, historians concluded that he had been involved only very briefly in this profession and was not good at it.
Most historians would conclude that his fight against the king's appointed Council lasted too long.
And certainly they would never admit, as some historians may conclude, that in the end the hydrogen bomb kept the peace.
Historians, however, have concluded that there was no legal precedent for the seizure.
Besides, historians have recently concluded that the premise of Thanksgiving might be a lie.
Many historians have concluded that the pope's jurisdiction within the church was unchallenged.
Archaeologists and historians quickly concluded that the objects were forgeries.
Some historians have concluded that they cannot write national history anymore, but only microhistories of specific persons and small events.