We use the word OK almost everyday, without us even noticing. Ask Alexa to do anything, she'll reply with OK, in most cases. We even hit OK before confirming something or even talking about ourselves, all OK. But ever wondered where has OK originated from?
The intellectuals had a habit of intentionally misspelling abbreviations. OW - Oll Wright - all right, KC - Knuff Ced - enough said, KY - Know Yuse - no use but one abbreviation stuck with us, OK - Oll Korrect - all correct. In the early 1800s, all correct was a common way of saying that everything is fine. It was very commonly used and people would often say all correct to mean that everything was in order.
On March 23, 1839, The Boston Morning Post, published the use of OK for the very first time. Soon, other papers took this as a joke and published it everywhere. Soon, OK was something everyone knew about. After this, the 8th U.S. president, even straight up adopted this as a nickname to his 1840 reelection campaign. This lead to formation of O.K. Club everywhere around the U.S. by his supporters. Even though he lost the reelection, OK was very well stuck to U.S. dictionary and had started to be used widely.
The telegraph was when OK shined. The telegraph was used to send small messages like dots and dashes and OK was used as it was a very simple two letter word which couldn't be confused with anything else. On receiving the message, the telegraph office sent OK as a confirmation.