It was D. <span>Baron Friedrich von Steuben
He was a former </span><span>Prussian officer.</span>
Henry ford developed and popularized the use of a conveyor system. Another thing which has impacted me is that there are several cars produced from his original model t and he was the first mass producer of a pickup truck.<span />
To show how things may have changed in time things are going to develop between periods
River transport is very important because it had rear accedents cases as compered to road transport systerm, which counts almost 5 death per day. in addition to that, it was very cheap though it is slow
I believe the answer is the second one :)