Introduction and facts about United States.
Made up of fifty states and a federal district, the United States of America is the third largest country in the world, with a total land area of 9.83 million sq km. Situated in North America between Canada and Mexico, USA houses more than 300 million people. Considered as a land of opportunities by many from across the globe, United States of America celebrates a rich mix of ethnic groups, races, cultures and customs and is thus well known for its "melting pot" ideology.
Enjoying the magnificence of the Great Plains, Rocky Mountains and Ozark Plateaus, the States experience incredibly varied climate. It is difficult to restrict USA in a specific climate zone as some regions face tropical climate while others experience arctic, it's arid in one area and semi-arid in others, but if a common word was to describe the same, it would be temperate.
The world's largest economic power, USA's GDP per capita stood at a brilliant $13.84 trillion in 2007, with the service sector contributing for more than 75%. With consistent growth and new technological advances, this market-oriented economy has expanded its boundaries way past petroleum, steel, automobiles, telecommunications, aerospace, consumer goods, etc. Also a vast expanse of railways, roadways and more than 14,000 airports contributes to the growth and prosperity of the USA