It would be the "chain of command" that determines the number of levels and managers in an organization, since this also determines the hierarchy of the people in command as well. <span />
Its Rome because I read this in my class
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he was a hero and is best known for his truly heroic final act: incarcerated in the Warsaw ghetto, with nearly 200 children from the orphanage he ran, he decided to refuse the offers of rescue he received from his Polish friends, and to accompany the children instead on their journey to Treblinka
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