The origin of感恩节 can be traced back to the early American colonies, where the custom of giving thanks for good harvests was already in place. In 1621, the English King Charles I issued an edict requiring all English subjects to give thanks for good harvest and to render to the King and his nobles the produce of their land. This custom was soon adopted by the colonies and became a central part of American culture. Today,感恩节 is celebrated by families and communities across the United States on the last Sunday of November, to express gratitude for the many things in our lives that bring us joy and happiness.