The Pilgrims set ground at Plymouth Rock on December 11, 1620.
Their first winter was devastating.
At the beginning of the following fall, they had lost 46 of the original 102 who sailed on the Mayflower. But the harvest of 1621 was a generous one. And so the remaining colonists decided to celebrate it with a feast.
It lasted for three days.
This "thanksgiving" feast was not repeated the following year.
Many years passed before the event was repeated.
After a 40-year campaign of writing editorials and letters to governors and presidents, Sarah Josepha Hale, a magazine editor, turned her obsession into reality when, in 1863, President Lincoln proclaimed the last Thursday in November as a national day of Thanksgiving.
Since 1941, Congress has declared Thanksgiving as a national holiday to be commemorated by friends and families all over the country in the fourth Thursday of November.