What month was The Mason-Dixon Line was established?

DECEMBER!!! Can you believe it is finally here? I love December...ok yes you caught me I am biased because I was born in December! Bonus Question: On what day, that will live in infamy, was yours truly born? (Answer at bottom) So since my birthday is this month I decided to make a 24 before 25 list .
So what do y'all think? I think I can handle it, well I hope I can! Some are easy others not so much. But hey we will see. Have a great day guys!



Answer: December 7th aka Pearl Harbor Day