In the United States Thanksgiving is usually a family day, celebrated
with big dinners and joyous reunions.
One of the first Thanksgiving observances in America was entirely
religious and did not involve feasting. On Dec. 4 1619, Thirty
-Nine English settlers arrived at Berkeley Plantation, on the James
River near what is now Charles City, Va. The group's
charter required that the day of arrival be observed yearly as a day
of thanksgiving to God.
For many years there was no regular national Thanksgiving Day in the
United States. Some of the states had a yearly Thanksgiving
holiday, and others did not. By 1830 New York had an official
state Thanksgiving Day, and other Northern States soon followed its
example. Virginia was the first Southern state to adopt the
custom.. President Lincoln proclaimed the last Thursday in
November 1863 as "a day of thanksgiving and praise to our beneficent
Father".
In 1939, President Rooservelt set it one week earlier. Congress
finally ruled that after 1941 the fourth Thursday of November would be
observed as Thanksgiving Day and would be a legal federal holiday.
Excerpts from the World Book Encyclopedia