People play a very important role in the process of development as :
- People themselves are a part of development
- Contribution and a small hand itself from the side of people provide a great help.
- Mutual understanding amoung other people and spreading of awareness.
Here's the most prominent inventions from the early 1900's
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
