Inventions in the mystery countries

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Across
  1. 1. Steve ..., U.S., invented the personal computer in 1976.
  2. 2. In the ...s, Dr David Warren, an Australian scientist, invented the black box flight. It is a machine that records the voices and instrument readings in the cockpit of an airplane.
  3. 6. John Joly is an Irish inventor known for the invention of color ... in 1894.
  4. 9. In ...,in 1897, John Philip Holland created the first submarine used in the military.
  5. 11. David Edward Hughes was ... and he invented the microphone.
Down
  1. 1. New Zealand referee William Atack became the first sports referee in the world to use a ... to stop a game in 1884.
  2. 3. The ... was invented in Canada by Joseph-Armand Bombardier in 1937.
  3. 4. The ... is a unique Australian invention. It was originally used for hunting.
  4. 5. The first pneumatic tire was made by ... inventor John Boyd Dunlop
  5. 7. A.J.... created bungy jumping in New Zealand after learning of a traditional practice in Vanuatu where participants leap from wooden structures attached to vines.
  6. 8. The first refrigerator was demonstrated by William Cullen at the University of ... in 1748.
  7. 10. Robert Recorde came from ... and he was the first person to use the modern equals (=) and plus (+) signs in a publication.