Answer: 1920- Hair Dryer
1920- First radio station
1920- The Thompson Sub-Machine Gun
1920- The Band Aid
1921- First robot built
1923- Traffic Signal
1925- Mechanical Television
1926- Liquid Fueled Rockets
1928- Penicillin
1929- Car radio
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Explanation:
Answer:
A) Both helped liberated much of South America from Spanish rule.
The history of electricity is very interesting.
From Mr. Faraday when he discovered in 1831 the basic principles of electricity generation and before Benjamin Franklin worked in experimental of electricity around 1752.
The electricity has been a great source of energy for the world.
Spite of the steam power has contributed to the industrial revolution before the development of electricity the electricity discover helped to usher in industrial activity in scale never before seen.
Based on that argument of the history the invention of electricity impacted the industries so that many manufacturers were able to build.... ( option D), because it shows a statement more nearly of the historic arguments.
