> As late as 1941, the U.K. was building more planes per year than the U.S. But by 1942, the U.S. was building roughly as many aircraft as Germany, Japan, the U

> As late as 1941, the U.K. was building more planes per year than the U.S. But by 1942, the U.S. was building roughly as many aircraft as Germany, Japan, the U.K. and Italy combined. Wow. Unbelievable