Where did the expression okay come from?

Related questions

1. What are full stops used for?
2. How do you use OK and okay?
3. Is OK an abbreviation of okay?
4. What does Okey Dokey Artichokey mean?
5. What is full form OK?
6. How do you write OK in AP style?
7. Are you supposed to capitalize OK?
8. Why do we use OK?
9. When Should capital letters be used?
10. Is OK and yes the same thing?

Tags

1. #originated
2. #gained
3. #kinderhook
4. #expression
5. #letters
6. #korrect
7. #buren
8. #after
9. #popularity
10. #abbreviation
11. #stood
12. #called
13. #president
14. #political
15. #organization
16. #martin
17. #birthplace