Vinaora Nivo Slider 3.xVinaora Nivo Slider 3.xVinaora Nivo Slider 3.xVinaora Nivo Slider 3.xVinaora Nivo Slider 3.xVinaora Nivo Slider 3.x
USA flag and map

America or United States of America (official name) generally known as US or USA - to distinguish them from the Americas. The United States is a federal constitutional republic consisting of 50 states and a federal zone. USA is the third largest country in total area and population of the world.

This country is one of the countries most ethnically diverse in the world, as a result of the exodus from many other countries around the world. The national economy of the United States in the world's largest upward when making unified declaration of independence on July 4, 1776. After two world wars, the United States became a global superpower, is a permanent member of the permanent Security Council of the United Nations.

USA has been a leader in technical innovation and scientific research from the late 19th century, the land attracts immigrants like Albert Einstein. Much of the research and development fund with about 64 percent coming from the private sector. The United States leads the world in scientific research papers and impact factor. 1876, Alexander Graham Bell patented the device manufactured for the first time. Thomas Edison's laboratory developed the gramophone (phonograph), incandescent light bulbs first heat-resistant, and durable first camera. In the early 20th century, the company that created the car as Henry Ford and Ransom Olds led the way in the production chain method. In 1903 the Wright Brothers is considered the inventor of the first airplane. The United States is a major development was the forerunner of the Internet Arpanet. Nearly half of US households have broadband Internet service (Broadband Internet). USA is the developed countries and major crop genetically modified food; over half the world's land is used to plant crops in biological engineering in the United States.

In 2003, the average American has about 759 cars for every 1,000 Americans. Approximately 39 percent of personal vehicles are vans, SUVs, or vehicles with small cargo floor. The average American adults spend about 55 minutes a day driving on the average distance of 29 miles or 47 kilometers. American Airlines is the largest airline company in the world. 16 out of 30 passengers busy airport in the world located in the United States. The United States has a multiethnic population-31 ethnic groups with a population of over 1 million people. The growing population of Spanish-speaking people is a major demographic trend. Some 44 million Americans speak Spanish forming the largest ethnic minority in the United States and the numbers continue to rise. Approximately 64% of Spanish-speaking origin from Mexico. The United States has 50 urban areas with populations over 1 million people. Among the 50 metropolitan regions fastest growing, 23 metropolitan areas located in Western and 25 metropolitan areas in the south. Of the 20 most populous metropolitan areas in the United States, urban areas like Dallas (fourth largest), Houston (sixth), and Atlanta (ninth) showed the largest increase in numbers between 2000 and 2006 in the Phoenix metropolitan area (rank 13) developed the largest number of population percentage.

The US government does not control the American creed. In a private poll conducted in 2001, 76.7 percent of American adults identify themselves as Christians, down from 86.4 percent in 1990. The Protestant denominations accounted for 52 percent while Roman Catholicism is the largest denomination separately accounted for 24.5 percent. A different study showed that white evangelical Protestants (evangelical) accounted for 26.3 percent of the population; this is the largest group in the Protestant denominations; Protestants of evangelical of all who comprise between 30 to 35 percent. The total number of non-Christians according to figures in 2007 was 4.7 percent, up from 3.3 percent in 1990.

The federal holiday in the United States are often prescribed by the formula: the tenth day of second week of the month Y Z, for example, Thanksgiving Day is the day after Thanksgiving harvest held on Thursday in the fourth week of January 11 (three weeks ago must have Thursday). Americans tend to leave less and less over the years. America is the cradle of music and cinema world with Hollywood films and the cinema prize to recognize the contributions of the studios and actors worldwide. The United States is also the convergence of computer science and technology with Silicon Valley technology firms world-famous as Apple, IBM, eBay, Amazon, Google, Facebook, ...

The average life expectancy for Americans is 77.8 years, approximately 1/3 of the adult population obese and add 1/3 oversized weighing scales; the prevalence of obesity is highest and has doubled in the past quarter century. Type 2 diabetes is related to obesity is the disease of concern for health care providers in the US operations. Health care system of the United States spend in excess of any other country, in both the spending per capita and percentage of GDP. United States ranked 8 in the world in the Human Development Report 2006 of the UNDP. The poor and middle-income people but with young children and subsidized finance free health for the elderly, children under the age of majority, the patient no longer working capacity.

American public education by the state government and local governments in charge and by the US Department of Education coordinated by the restrictions relating to the federal aid. In most states, children from six or seven years old are required to attend school until they are 18; The United States has many universities and private universities and well-known public policy and rigorous selection as Harvard students (HSB - Harvard School of Business), but also universities in local community method allows students to enroll free. Among Americans aged 25 and older, 52.6% have attended college, 27.2% have a university degree, and 9.6% have graduate degrees. UN rated US education index is 0.97, ranking 12th in the world. As a Vietnam-country halfway around the world, but always attractive and is the destination for many students realize the dream, the American dream, starting with CES road trip.