Misc: what is created when the speed of sound is exceeded?

Questions

If the right hand page of an open book is recto, what is the left hand page?

What name is given to the type of window which opens on vertical hinges?

In which modem country is the site of Carthage?

Which word other than renege means 'to neglect to follow suit at cards'?

In which modem country was there a region called Acadia?