The mighty Persian Empire quickly developed into a powerful nation that had successfully been conquering other countries and territories prior to an assault leading up the coast of Greece at Marathon located approximately forty miles from Athens in 490 BC.
Tacitus was a member of this Roman elite, and whether there is a bias in his writing is difficult to know. Indeed, Tacitus was still a boy at the time of the fire. He would have been a young teenager in 68 A.D., when Nero died.
A form of daily reports created by the Romans was called Acta Diurna, It was often referred to as simply Acta or Diurna The contents of this included things that were happening in the empire.