Christmas is a holiday rich in traditions and interesting trivia, such as Christmas symbols and the history of Christmas cards. For example, gold comes from one of the gifts of the Three Wise Men, which symbolizes the divinity of Jesus Christ.
Frankincense and myrrh are also significant Christmas symbols because they come from the Three Wise Men. According to How Stuff Works, frankincense, an incense that comes from the Boswellia tree, symbolizes prayer. Myrrh not only symbolizes the suffering of Jesus Christ, it also has medicinal value. The advent wreath has several symbolisms attached to it. For one, its shape represents God and eternity. The green pine of the wreath symbolizes eternal life. The candles represent the light of Christ. As a whole, the advent wreath represents not only the arrival, but also the inevitable return of Jesus Christ. The Christmas tree symbolizes eternal life and renewal, but was originally a part of pagan celebrations. Christianity borrowed it from paganism in Germany as early as the 16th century. By the next century, Christmas trees had spread to use in private homes; the custom reached England during the 19th century.
Christmas cards were invented in 19th century England by Sir Henry Cole and John Callcott Horsley. The point was to create a holiday greeting for family and friends that was simple and had a single message. The tradition took off and spread to the United States a few years later.