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81.
Who is known for inventing the first practical sewing machine, which revolutionized clothing production?
Explanation:
82.
Who is famous for the discovery of penicillin, the first widely used antibiotic?
Explanation:
83.
Who is the inventor of the mechanical printing press, a precursor to modern printing technology, in the 15th century?
Explanation:
84.
Who is credited with the invention of the telephone exchange, allowing multiple phone lines to be connected to a single central office?
Explanation:
85.
Who invented the first practical air conditioner, greatly improving indoor climate control?
Explanation:
86.
Who is known for inventing the modern safety razor, improving shaving techniques and personal grooming?
Explanation:
87.
Who developed the first successful polio vaccine, administered using a live, weakened virus?
Explanation:
88.
Who is known for inventing the first practical telegraph system, greatly improving long-distance communication?
Explanation:
89.
Who is famous for the development of the first commercially successful video game, "Pong"?
Explanation:
90.
Who is credited with inventing the World Wide Web browser, enabling easy navigation and access to online information?