Answer: 1. 1953: FORTRAN, the first commercially available programming language, is developed.
- Developed by John Backus and IBM.
- Originally developed for scientific computations.
- Currently used to rank the world's fastest supercomputers.
2. 1972: The C programming language is developed.
- Developed by Dennis Ritchie.
- Developed to encourage cross-platform programming.
3. 1989: The Python programming language is first implemented.
- Originally created and developed by Guido van Rossum.
- Currently developed by the non-profit Python Software Foundation.
- Emphasizes code readability.
Step-by-step explanation: