The imperial administrators were not dedicated to the tasks of either civilizing the natives of the frontier regions or gaining their affection. They were concerned with establishing the most secure lines their limited resources would allow. They spared little time in putting the residents to the task of supplying the legions with urgently needed food and raw materials. Forced levies of goods, backed up by Roman military might and the threat of enslavement should natives fail to meet the demands placed upon them, soon became the driving forces of native life. Traditional ways of life were swept aside by these imperative demands. Pastoral peoples soon began opening up vast tracts of agricultural lands; agricultural peoples somehow found ways to increase their production; and indolent peoples were soon felling timber, quarrying stone, and digging for iron, copper, lead, zinc, tin, gold, silver, and whatever other mineral wealth their district might hold. The Roman military demanded tens of thousands of cattle, and somehow the frontier managed to produce them.