With worldwide urbanization, food buying is increasingly removed from food production. During the 20th century, the supermarket became the defining retail element of the food industry. There, tens of thousands of products are gathered in one location, in continuous, year-round supply. Food preparation is another area where the change in recent decades has been dramatic. Today, two food industry sectors are in apparent competition for the retail food dollar. The grocery industry sells fresh and largely raw products for consumers to use as ingredients in home cooking. The food service industry, by contrast, offers prepared food, either as finished products or as partially prepared components for final "assembly". Restaurants, cafes, bakeries and mobile food trucks provide opportunities for consumers to purchase food. In the 21st century online grocery stores emerged and digital technologies for community-supported agriculture have enabled farmers to directly sell produce. Some online grocery stores have voluntarily set social goals or values beyond meeting consumer demand and the accumulation of profit. Food industry technologies Modern food production is defined by sophisticated technologies. These include many areas. Agricultural machinery, originally led by the tractor, has practically eliminated human labor in many areas of production. Biotechnology is driving much change, in areas as diverse as agrochemicals, plant breeding and food processing. Many other types of technology are also involved, to the point where it is hard to find an area that does not have a direct impact on the food industry. As in other fields, computer technology is also a central force. Marketing As consumers grow increasingly removed from food production, the role of product creation, advertising, and publicity become the primary vehicles for information about food. With processed food as the dominant category, marketers have almost infinite possibilities in product creation. Of the food advertised to children on television 73% is fast or convenience foods. Labor and education Until the last 100 years, agriculture was labor-intensive. Farming was a common occupation and millions of people were involved in food production. Farmers, largely trained from generation to generation, carried on the family business. That situation has changed dramatically today. In America in 1870, 70–80% of the US population was employed in agriculture. , less than 2% of the population is directly employed in agriculture, and about 80% of the population lives in cities. By country Food industry in Azerbaijan Food industry of Russia Ministry of Agriculture and Food Industry (Moldova)