How have u. s. presidents contributed to over time?

The correct answer to this open question is the following.

U.S. Presidents have contributed to Thanksgiving overtime in that US Presidents have designated this important date as an annual holiday for all the American citizens to celebrate with their families. Another contribution is that they had this public ceremony in which they pardon a Turkey. President George Washinton proclaimed November 26, 1786, as a Thank's Giving Day; and in 1863, President Abraham Lincoln establish this celebration as a national holiday. This is, without a doubt, the most important day to celebrate with family.

no questions on whether they are allowed that right