Respuesta :
In the twentieth century, the major developments happened were the initiation of innovative and new technologies.
What is meant by an invention?
An invention is a process of creating and inventing something which is unique and innovative in nature.
In the twentieth century, the development of various technologies is as follows:
- Electricity was discovered by Benjamin Franklin in the year 1752.
- The incandescent light bulb was invented by Thomas Alva Edison in the year 1879.
- The gasoline automobile was first developed by Frank and Charles in the year 1893.
- The phonograph was initially invented by Thomas Edison in the year 1877.
Therefore, the important developments made in the 20th century were explained above.
Learn more about the invention in the related link:
https://brainly.com/question/160184
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