Well, I am sure it will delight you to know,

The truth about Thanksgiving is even worse!

The concept that we celebrated thanksgiving with the indians near plymoth rock is just made up. If you want to read the real bit of history... well there is the holding the crew of the ship captive until they agreed to break their bond, there is the...

Oh, this is supposed to be about thanksgiving...
In those days thanksgiving wasn't a holiday, it was a holy day. If you had a bit of good luck, or you literally dodged a bullet, you would declare a day of thanks giving. In which you prepared a feast and gave thanks that you were (still ) alive, and thank God that was so.

It wasn't a holiday until President Lincoln. You see, they were conscripting people into the army in New York (rounding up the poor) and the poor in New York started rioting. To quell the rioting, the general ordered the men to shoot down the street. This stopped the riot, but made a lot of people anxious and upset. Many northern states were not happy about what Lincoln was doing to the south and were calling to succeed.

So, President Lincoln called for a holiday. That there would be a national "thanks giving" day. In order to calm the people.