Greek plays feature a group of performers who sing, dance, provide exposition and interact with the other characters. This group is called...

The Chorus.

Explanation:

In Greek plays, there is a group of people who would act as commentators of what the scene is unfolding, or about the characters and other details that are not really easy or possible to know from mere viewing. This group of actors help the audience by describing the scenes as they occur.

Through their performance of songs, commentaries, dancing, or even recitations, the Chorus acts as another window through which the scenes are interpreted or viewed. It provides the atmosphere for the play and also a different perspective on how the play is viewed.  

the truth, that she cannot go at the moment.

explanation:

tell her that there aren't any tickets, but maybe at some point you guys could go on a road trip to the nearest city with them and see it there.

1492

columbus changes the shape of the world

ferdinand and isabella unite and create catholic spain

jews and moslems driven out of spain

lorenzo de medici dies

no one buying art and supporting city like before, his brother had been assassinated slightly before

florence to rome renaissance shift

east to west transition of church administration to the vatican