 Surface: USA has a total land area of 9,161,923 sq km. Population: USA has approximately 301,759,000 inhabitants with Caucasians and African-Americans as the major ethnic groups. System of government: USA is a constitution-based federal republic. Capital: Washington, DC, with an approximate population of 582,000, is the capital of USA. Religion: Protestants and Roman Catholics constitute majority of the population. Official Language: USA has no official language, but English is the de facto national language. Government: USA is a constitution-based federal republic. Climate: The climate is mostly temperate, but tropical in Hawaii and Florida, arctic in Alaska, semi arid in the Great Plains and arid in the Great Basin in the south-west. Units of measure and electricity: USA follows the United States units of measurement and the electricity unit is 120 V, 60 Hz. Time Zone: USA follows four time zones and has daylight saving time. Currency: US dollars (1 € = 1.47 $) Travel documents required: A visa is required for entering the US. |
| Economy |
| Having a mixed capitalist economy, USA is one of the largest and technologically powerful economies in the world. USA is well endowed with natural resources and has well-developed infrastructure and high productivity. Being a vast country, in size and in culture, the cost of travelling or living is very region specific. For example, New York is one of the most expensive regions in the US. The south of US, on the other hand, is probably the cheapest place in America. |
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