Misc: After the end of the Vietnam War, to what was Saigon's name changed?

Questions

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?

Name the old type of window which housed cords attached to counterweights in order to hold it open at any height?

In the game of draughts, what term means to remove from the board for failing to make a possible capture?