The history of Boston's Christmas Tree... This amazing tree travels all the way from Nova Scotia, Canada... Why??? Well here it is - On the morning of Thursday December 6, 1917 a French cargo ship the SS Mont-Blanc filled with explosives collided with a Norwegian vessel the SS Imo. The blast was the largest man-made explosion prior to the development of nuclear weapons,[2]releasing the equivalent energy of roughly 2.9 kilotons of TNT[3] (Wikipedia) Celebrating a Tradition Hal