Автор работы: Пользователь скрыл имя, 22 Октября 2013 в 22:58, реферат
By the end of the 20th century, the United States is the largest power in the world. The country is located in the climatic zones that is favorable to agriculture and tourism, has more than a hundred kinds of minerals. Of natural resources for the largest share in the total volume of products of mining industry in terms of cost are energy resources (90%) - oil, coal, natural gas, uranium. About 75% of metal production accounts for iron ore and copper. However, up to 50% of the needs of the national economy in mineral raw materials is satisfied by import. In particular, the US has no reserves of such strategic metals such as chromium, manganese, tungsten, cobalt. Having five percent of the world population, the country produces one fifth of the world production of copper, coal and oil. Agriculture of the United States delivers on the world market 50% of corn, 20% of beef, pork, lamb, about one third of wheat. USA - the world's largest buyer (13% of world imports) and seller (18% of world imports).