If not for a horse, would Alexander have been the Great? William, the Conqueror? Richard, the Lionhearted? If not for their awesome mounts, would the Spaniards have had their way with the New World? Would Paul Revere have spread the word? Would the West have been won? It is hard to comprehend how far horse power has carried us, difficult to imagine, in our era of mechanical wizardry and speed, what role the horse has played in shaping human history...