Question

What is the main purpose of Horatio’s speech?

to describe to the audience the location of the castle and kingdom
to help the audience better understand Horatio’s character
to inform the audience of the events leading up to this point
to explain to the audience how the former king died and became a ghost

Answer 1

to inform the audience of the events leading up to this point

Horatio’s speech provides background — the ghost’s previous appearances and the recent political/military tensions — so the audience understands why the ghost’s appearance is important.