This says that the primary reason is fuel economy under the likely operating conditions. I'm not an expert, but I think that this is completely wrong. Turbopr

This says that the primary reason is fuel economy under the likely operating conditions. I'm not an expert, but I think that this is completely wrong. Turboprops are able to produce a lot more thrust at low speeds than turbojets, which is most likely the reason. To make a large transport plane with turbojets, the jet engines would need to be absolutely massive (or you'd need a lot of them) and/or you need a really, really long runway to build up speed for takeoff. This would make it fairly useless for military transport purposes. Fuel economy be damned.