Christmas Day was first declared a national holiday in the year 1870. Christmas was celebrated in many nations before this date, but these celebrations were typically limited to the upper class in each society.
The prevalence of Christmas Day celebrations increased following its designation as a national holiday. It also gave rise to the concept of the Christmas season, with a greater emphasis being placed on purchasing material goods and decorating one's home to celebrate the holiday. Continuing into the 20th century, Christmas gained a significant amount of popularity and is now characterized by trees, presents, and carols that are commonly associated with the holiday.