Which of these was the greatest contribution of prussian military expert baron von steuben to the american war effort? a) he secured much-needed supplies from prussia. b) he trained the continental army at valley forge. c) he donated large sums of money to the colonists. d) he led a group of soldiers at the battle of saratoga.

The correct answer is
B)He trained the Continental Army at Valley Forge.

The problem that the army had was that they didn't have any training unlike their opponents who not only had a great military tradition, but also great generals. Baron von Steuben was of great importance because the helped the army learn how to fight and things like that that were necessary.

True,  spain conquered the incas and the aztecs for their gold and silver.