The successful launch of sputnik 1 was the first instance of what?
satellite communication
use of the internet
computer-operated robotics
use of a gps device

The correct answer among the choices is satellite communication. The successful launch of Sputnik 1 was the first instance of satellite communication. Thank you for posting your question. I hope this answer helped you. Let me know if you need more help. 

And this too use this if needed

Army hope this