To get into the spirit of Christmas. This is because it has been a tradition for a long, long time also because people think it looks nice, special and homely.Because people get together and put them up to have fun while you are celebrating god.
6453 years.
since 1954
Hundreds of years, maybe a thousand.
27 years
Ever since July 1, 1867.
Martin Luther (1483 - 1546) did not "start" the Christmas tradition. The "Christmas tradition" dates back to at least the 4th century, though early Christians were celebrating the birth of Jesus Christ long before that.
I'm British and neither I nor anyone I know does anything with apple trees at Christmas. The apples have been eaten and its leaves have fallen long before Christmas.
From cca. 20 years, but it is only a marginal celebration of commercial use.
well you just got pranked
For around 100 years; Christmas was mentioned as a feast day in 394 AD in Constantinople. Christmas probably developed from pre-Christian feasts celebrating the day after winter Solstice (which is Dec 25) which were celebrated in Rome - and all over western Europe - long before Christ.
Samoa became independent in 1962, so in 2012, Samoa has just finished celebrating 50 years of independence.