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:
For instance, you have a bed in a room so basically you must describe it so you will say the bed is big and it occupies a little or a large amount of space in the bedroom and a lot of people or some people or one person can sleep you can describe more plz give me thanks and brainliest
Answer:
the answer is b the columbian exchange
Explanation:
The correct answers are: A. many wars within the empire and with foreign powers. And B. duty to pay taxes and serve in the army for citizens.