For which war are you referring to?
He conquered most of the Mediterranean basically. he was a great warrior and led his people almost everytime to victory. He end up dying because of a bug (he got malaria or something like that)
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people can preserve culture by documenting it and passing traditions on to younger generations.
Yes more than likely they were I'm not 100% sure though
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Justinian I served as emperor of the Byzantine Empire from 527 to 565. Justinian is best remembered for his work as a legislator and codifier. During his reign, Justinian reorganized the government of the Byzantine Empire and enacted several reforms to increase accountability and reduce corruption.