The success of these bands of robbers was an easy thing, for the reason that those whom they plundered and enslaved were comparatively defenseless; being scattered thinly over the country; engaged wholly in trying, by rude implements and heavy labor, to extort a subsistence from the soil; having no weapons of war, other than sticks and stones; having no military discipline or organization, and no means of concentrating their forces, or acting in concert, when suddenly attacked.