What would be the effect of including details from daily life of south africa in a story?

Which sentence from this passage explains what the main characters do in rosencrantz and guildenstern are dead? "tom stoppard's play, rosencrantz and guildenstern are dead, draws on two previous theatrical works: shakespeare's hamlet and samuel beckett's waiting for godot." "as in beckett's play, rosencrantz and guildenstern pass the time by impersonating other characters, engaging in word play, and remaining silent for long periods of time." "these same two characters were also featured in a parody of hamlet, the short comic play by w. s. gilbert entitled rosencrantz and guildenstern." "gilbert's play makes rosencrantz and guildenstern into central characters and alters the storyline of hamlet."

In "tell me, o swan, your ancient tale," to what does the land where no doubt nor sorrow have rule refer? nature heaven the promised land an imaginary country

Which secondary effect of advertisement happens when a customer is satisfied by a product and buys it for a second time?