【正确答案】正确答案： Thanksgiving The American Thanksgiving, by law on the fourth Thursday of November, / has a long tradition in the United States. / The first American Thanksgiving occurred in 1621, / with early North American settlers celebrating their first harvest / after a harsh winter in the new world. / In 1863, President Abraham Lincoln made it an official holiday. / Today, Thanksgiving serves as a day for family gatherings with luxurious turkey feasts, / accompanied by a wide array of side dishes and pies. / So this holiday is one of the busiest times for travel in America. / Millions of people travel by car, train, or air, to feast with family. /