Reported in Scientific American, This Week in World War I: March 6, 1915 World War I was an artillery war. Even as new technology—tanks, airplanes, submarines and poison gas—changed the nature of fighting, it was the power of mass manufacturing that had the most profound effect on the conduct of war.
Much of what we buy in the U.S. is not made here, and hasnt been for decades. If 2013 is any indication this could be changing, although the next generation of American manufacturing will differ greatly from its predecessor thanks to advanced technologies that rely on information rather than brawn.
Even as 3-D printing's impact on science, healthcare and consumer electronics grows, these devices aren't likely to find their way into your home anytime soon.