About countries

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Across
  1. 3. Mainland, where the longest river in the world flows - the Nile.
  2. 4. Symbol of the United States? (combination of 2 words)
  3. 6. How many states in USA?
  4. 7. The biggest country in the world.
Down
  1. 1. What is the name of Queen of GB?
  2. 2. Capital of Wales?
  3. 5. The smallest continent.