Purveyance
Purveyance, a greatly expanded form of the ancient customary right of prise, was a medieval prerogative right of the English Crown to purchase provisions and other necessaries, at an appraised price, and to requisition horses and vehicles for royal use. The ancient right was for the benefit of the poor, but was developed in England, over the course of the late eleventh through the fourteenth centuries, as the purveyance system, by which the king was able to collect goods needed for both household and military use.