Christmas is a Christian holiday that celebrates the birth of Jesus Christ.The first mention of the celebration of Christmas occurred in A.D.336 in an early Roman calendar, which indicates December 25th as the day of observance.
During the Reformation, many Christians began to consider Christmas a pagan celebration because it included nonreligious customs, therefor during 1600 Christmas was outlawed in England and other parts of the English colonies in America.
In the 1800`s ,decorating Christmas trees and sending Christmas cards became popular customs.