Misc: In which country is the fortress of Sacsahuaman?

Questions

In which war did the Lancastrians fight the Yorkists?

Which cricketer captained England and also won honours in fencing?

What do The Specials,The Fun Boy Three and The Colour Field have in common?

Name three planets with rings?

Which Shakespearean play inspired music by Bernstein,lyrics by Sondheim and a character called Officer Krupke?