Food production is America's largest industry.
Yet the world faces some critical challenges to continuing its daily struggle to feed its citizens. The world is fed by people who produce crops, raise livestock, and harvest wild animals and plants. The variety of the world food supply is huge, including coffee, cacao, grains, soybeans, potatoes, tea, fruits, vegetables, sheep, pigs, cattle, poultry, dairy products, and fish. The trend in world agriculture is toward national self- sufficiency. If every country became self-sufficient and operated under a free market economy, the world's food supply would be dictated by the laws of supply and demand.