A smallholding is a small farm. In third world countries, smallholdings are usually farms supporting a single family with a mixture of cash crops and subsistence farming. As a country becomes more affluent and farming practices become more efficient, smallholdings may persist as a legacy of historical land ownership practices. In more affluent societies, smallholdings may be valued primarily for the rural lifestyle that they provide for the owners, who often do not earn their livelihood from the farm. There are an estimated 500 million smallholder farms in the world, supporting almost 2 billion people. Today some companies try to include smallholdings into their value chain, providing seed, feed or fertilizer to improve production. Some say that this model shows benefits for both parties.