Much of that green is food, either for people or cattle, which is indirectly for people. These pictures are of Amish farms. The Amish people generally don't use chemicals but rely on old fashioned methods of farming. They use horses and mules rather than tractors. They also shun automobiles and electricity unless they generate it themselves. They have their own schools, don't go into the army and do not participate in the social security system. They live among but separate from the other people in the area with little friction. Their religion/lifestyle is allowed to function separately because we have freedom.