Why do we say hello after receiving a call?

Related questions

1. What do they call a female pirate?
2. When did Hello invented?
3. Who invented the word selfie?
4. What do pirates drink?
5. Why do pirates say ahoy?
6. Where did Ahoy come from?
7. How do pirates say hello?
8. Where does Ahoy come from?
9. Did pirates eat oranges?
10. What is the best phone greeting?

Tags

1. #telephone
2. #people
3. #phone
4. #arrived
5. #hello
6. #graham
7. #thomas
8. #become
9. #better
10. #answering
11. #dictionary
12. #urged
13. #until
14. #usage
15. #common
16. #rival
17. #thought
18. #alexander
19. #edison