Country Seeker

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Across
  1. 4. One of the countries with the largest Orthodox churches in the world
  2. 5. The largest country in Asia.
Down
  1. 1. A country composed of 333 pieces of "jigsaw" puzzles
  2. 2. Korea The most mysterious and strictly information-controlled country in the world
  3. 3. The largest country in North America
  4. 6. Their national flag is not rectangular.