The first Thanksgiving Day was celebrated in the year 1621. The Pilgrims, who had come to the New World from England,landed at Plymouth Rock, in what is now Massachusetts, on December 26, 1620 after being at sea for almost a year.
When the Pilgrims landed in America they discovered that the grain they brought from England wouldn't grow in the soil of their new homeland. The first winter was very hard for the early settlers, and many people died because of sickness and starvation. The native Indians came to the aid of the Pilgrims and taught them how to plant crops of corn. They also taught the Pilgrims how to hunt and fish.
Thanks to the help of the Indians, the settlers' crops did well in the fall of 1621 and there was a great harvest. The Pilgrims decided to have a feast as a way of giving thanks. The Pilgrams invited their friends, the Indians, to share this first Thanksgiving feast which lasted three days.
Thanksgiving was proclaimed a national holiday by Congress in 1941.