There are stories about two US Presidents,Andrew Jackson and Martin Van Buren,which attempt to explain the American English term OK. We don't know if either story is true,but they are both interesting. 

The first explanation is based on the fact that President Jackson had very little education. In fact,he had difficulty reading and writing. When important papers came to Jackson,he tried to read them and then had his assistants explain what they said. If he approved of a paper, he would write "all correct" on it. The problem was that he didn't know how to spell. So what he really wrote was "ol korekt". After a while,he shortened that term to "OK". 

The second explanation is based on the place where President Van Buren was born,Kinderhook,New York. Van Buren's friends organized a club to help him become president. They called the club the Old Kinderhook Club,and anyone who supported Van Buren was called "OK".
What are the stories about?
Do we know if they are correct/
What do we know?
Who are the two?
Where was the second born?
What did his friends do?
Why?
What did they call it?
Why?
Who was OK?
Who is the first story about?
What about him?
could he spell?
What did he try to do with papers?
But what happened?
What if he agreed?
But what did he put on them?
Then what did he do?
to what?
Which do you like best?
American English term OK
 American English term OK
No
We don't know if either story is true
they are both interesting
they are both interesting
Andrew Jackson and Martin Van Buren
Andrew Jackson and Martin Van Buren
Kinderhook,New York
Kinderhook,New York
organized a club
organized a club
help him become president.
help him become president.
Old Kinderhook Club
Old Kinderhook Club
where he was born
was born
anyone who supported Van Buren
anyone who supported Van Buren
President Jackson
President Jackson
had very little education
had very little education
No
he didn't know how to spell.
he tried to read them
he tried to read them
his assistants explain
his assistants explain 
he would write "all correct" on it.
he would write "all correct" on it.
ol korekt
ol korekt
he shortened that term
he shortened that term
OK
OK
President Jackson story
President Jackson