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Correct Answer: A) 1807.
Correct Answer: D) 1930s.
Correct Answer: A) Thomas Edison.
Correct Answer: A) 1862.
Correct Answer: D) A and c.
Correct Answer: A) Mechanical pencil.
Correct Answer: C) Interview.
Correct Answer: C) IBM 610.
Correct Answer: D) Algebra.
Correct Answer: B) False.
Correct Answer: A) Astrolabe.
Correct Answer: D) Telegraph.
Correct Answer: C) J.J Thomson.
Correct Answer: A) B-Galileo Galilei.
Correct Answer: C) Charles Goodyear.
Correct Answer: A) People looking for jobs.
Correct Answer: B) John Napier.
Correct Answer: D) Hans von Ohain.
Correct Answer: A) Joseph Cyril Bamford.
Correct Answer: A) Santaigo Ramony Cajal.
Correct Answer: A) Gunpowder and movable-type printing.
Correct Answer: A) Copernicus.
Correct Answer: A) Absolutely.
Correct Answer: B) Samuel Morse.
Correct Answer: B) Wright brothers.