Before 1990, the technologies available to internet users included basic forms of file sharing and online communication. However, streaming video, cloud computing, and online shopping in the way we know them today did not exist.
To break it down:
- File Sharing: Yes, basic file sharing was possible through services like FTP (File Transfer Protocol).
- Online Shopping: Not in the way we understand it today, although early forms of commerce and electronic transactions were explored.
- Streaming Video: No, this technology was not available before 1990.
- Cloud Computing: No, this concept was not developed until later.
So, of the options given, only file sharing was a technology available to internet users before 1990.