In eighteen sixty-three, during the Civil War, President Abraham Lincoln declared the last Thursday of November as a national day of thanksgiving. In nineteen thirty-nine, as the Great Depression was ending, President Franklin Roosevelt established the holiday on the fourth Thursday.1863年内战期间,总统亚伯拉罕?林肯宣布11月最后一个周四为全国感恩节.1939年大萧条结束时,总统富兰克林?罗斯福将感恩节定为第四个周四.
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