Mr North

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Across
  1. 3. State purchased from Russia in 1867
  2. 7. One of the coldest cities (on average) in the world; a rude PRN anagram
  3. 8. Third longest river in the world
  4. 11. Country second only in stars to the USA
  5. 12. A type of waistband that tells you about the child
  6. 13. Largest world heritage site on the planet
Down
  1. 1. Smallest country / microstate
  2. 2. Unimpressive wonder of the world according to pupils or PRN
  3. 4. Stretch of water that separates a city and two continents
  4. 5. A peaceful capital city in South America
  5. 6. International city of peace and justice; one of PRN's favourite pupils (homophone -use spelling of the former)
  6. 9. Russia has 11, USA 6, Australia 3, UK 1
  7. 10. Mr Latter's favourite rock