Tough question! In the searches which I have been doing, I am finding that while Boswellia carteri, the tree which yields up the resin which is steam distilled to produce Frankincense, has been grown for literally thousands of years in the middle east, it has not been commercially planted in North America. It appears to be native to Somalia, which is generally hot and arid and has sandy, calcium carbonate-based soil. In general, temperatures in Somalia range from 28 to 40 C (82-104 F).
The average annual rainfall is about 20 inches (50 cm / 500 mm). The trees seem to prefer rocky slopes, but will grow on flat areas with good drainage, as well. The trees do not appear to like freezing temperatures.
Although I cannot find evidence of any commercial plantings in the US, the regions which I would think might be most amenable would include the Big Bend area of Texas, the Nuevo Laredo area of Texas, the Alpine/Pine Valley area of Southern California. Some soil supplementation might be required in all those areas, although the Big Bend area of Texas includes former coral formations and should include reasonable levels of calcium carbonate. If the trees were planted now, it would be 8-10 years before they wold start producing resin.
One advantage of planting in the US would be the absence of certain breeds of poisonous snakes. As for finding seeds or seedlings for sale, once again, I am not finding a US source. I did find sources in Zaire and South Africa... but I'm not sure I want to include those links - they are there to be found, should you desire.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.