Geography puzzle

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Across
  1. 3. Most populated region
  2. 5. Main religion in Kyrgyzstan
  3. 6. Parliamentary system in Kyrgyzstan
  4. 8. Main sector of Kyrgyzstan's economy
Down
  1. 1. Opponent of Malthusian views
  2. 2. Country that shares borders with Kyrgyzstan to the east
  3. 4. Medical theory initially supported by Farr but later refuted
  4. 7. Language spoken by majority in Kyrgyzstan