The answer would be:
to inform the audience of the events leading up to this point
In Hamlet Horatio is a logical thinker and trusted by the people by making him giving this speech he tells the story to the people and people belive him, this way hamlet uses the trust people have in horatio so unveliebable events such as ghosts of dead kings talking to their children wont sound so crazy.
Answer:
vernacular :
Vernacular (pronounced ver-NACK-you-lar) is everyday speech. It's just the way people talk in day-to-day life. ... Vernacular and formal writing are the main forms of diction, or styles of speaking/writing.
diction :
Choice of words especially with regard to correctness, clearness, or effectiveness.