What The Hell Is A Traditional American Thanksgiving?‪!‬ Historiography!

I am at camp this week! (yay!) We delve into a, "how to" video from the 1940's and talk about a, "traditional American Thanksgiving." But what is a traditional American Thanksgiving even? To this particular video it means a lovely time spent with friends and family while displaying good manners! Is this what Thanksgiving is to everyone though?? Heck no! Let's keep exploring! But until then, here is the primary source goods!
 
https://www.youtube.com/watch?v=E4_zGR_nWRw