The population of the United States is about 285,000,000 which is also the fourth in the world, 24 China, India and Russia. It is made up of nationality groups and races 25 almost all parts and all nations of the world. 26 this reason, the United States has often been called "the melting pot of the world". Most of the people live in towns or cities. Only about four percent live on farms. The language of the country is 27 although nearly a hundred other languages are 28 by different nationality groups in the land. There is no stated religion. However, most Americans believe 29 Christianity, 30 there are more than 250 different religious sects.