The custom arose in Germany, and was transplanted ( pun intended) to the United Kingdom by Prince Albert- husband of Queen Victoria. The custom caught on in The British sphere! By the way the German song -O Tannenbaum does not once mention either Christ or Christmas.
The country is New Zealand. The pohutukawa is not actually a Christmas tree. It is a tree that blossoms at Christmas time
Christmas
The country would be New Zealand, but the pohutukawa is a native tree, not the nickname for a Christmas tree.
Germany gave us the tradition of decorating a Christmas tree.
Canada
italy
Germany
Christmas trees originally come from Germany and we adopted it as it spread from country to country throughout Europe.
Germany
Norway
Norway
Norway.