Answer: Option B
Explanation:
John Kruesi was a mechanic for Edison, and Kruesi built the phonograph. Edison designed it, and later improved the phonograph.
Answer: Option C
The cherry-flavored cola made its debut at Morrison's Old Corner Drugstore.
Fuel cells were invented in 1839 by Sir William Grove.
Answer: Option D
Italian, Alessandro Volta discovered the first practical battery in 1800. Life would be very different without batteries.
Answer: Option A
British inventor Frank Whittle was the first to patent his design for a jet engine in 1930. Although an engine designed by Dr. Hans Von Ohain was the first to fly in 1939. Whittle's jet engine first flew in 1941.
On April 6, 1914, Hiram Percy Maxim proposed the formation of the American Radio Relay League.
It was invented around the early 1700's.
Grigg, who was from Missouri, originally named his creation 'Bib-Label Lithiated Lemon-Lime Soda'.
Know as the Father of Computing. He began his 'Analytical Engine' in 1833. The first computer, although he never completed it.
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