We know that the last part of the 20th century saw more large inventions: the helicopter in 1909, movies by 1926, the computer in 1928 and the jet plane in 1930. The middle part of the 20th century bring new ways to help people get over disease. They made people healthier and live long. By this time most people had led a very well life. Of course new inventions continued to be made. The world is known to man and the universe was not. Many countries began look for ways to go into space. Russia made the first step.
