Southeast Asia Crossword puzzle

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Across
  1. 2. River starts in the Himalayas and flows southeast through India
  2. 4. a southeast Asian country on the South China Sea
  3. 5. Desert Asia's largest desert
  4. 8. Islam originated here
Down
  1. 1. Shintoism originated here
  2. 3. Sea extension of the Pacific Ocean that lies between china and the Korean Peninsula
  3. 6. Buddhism and Hinduism originated here
  4. 7. of Japan small sea that is bound by Russia to the north, the Korean Peninsula to the west.