During the eighteenth century, widespread changes in agriculture, known as the agrarian revolution, involving the large-scale introduction of enclosed fields, of new farming techniques and crops, and the substitution of commercial for subsistence farming.A. revolution, involving the large-scale introduction of enclosed fields, of new farming techniques and crops, andB. revolution, involved the large-scale introduction of enclosed fields and of new farming techniques and crops, andC. revolution, which involved the large-scale introduction of enclosed fields and of new farming techniques and crops, andD. revolution involved the large-scale introduction of enclosed fields, new farming techniques and crops, and ofE. revolution that involved the large-scale introduction of enclosed fields and new farming techniques and crops, and of