London's Trafalgar Square Christmas tree is an annual thank-you gift from which country?
Some traditions credit which saint, the patron saint of Germany, with the invention of the Christmas tree?
What is the better known name of Picea abies which is the main type of traditional Christmas tree in many countries?
The first artificial Christmas trees were constructed using what attached to wire branches?
By the 1890s, which American department store was selling 25 million dollars of German-imported ornaments made of hand-blown glass and lead?
Which singer said: "I know that a Christmas tree farm in Pennsylvania is about the most random place for a country singer to come from, but I had an awesome childhood"?
Where in New York City would you visit its annual iconic Christmas Tree?
The first nongreen trees, manufactured by Modern Coatings of Chicago, were made of which material?
It is a widely held belief that which 16th-century reformer first added lighted candles to a Christmas tree?
The modern Christmas tree is a German tradition first made popular in the UK by Queen Charlotte, who was the wife of which king?