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USA commonly referred to as the United States (U.S.) or America, is a federal republic composed of 50 states, the federal district of Washington, D.C., five major territories, and various possessions. The 48 contiguous states and Washington, D.C., are in central North America between Canada and Mexico.
The Geography and climate of the United States are also extremely diverse, and the country is home to a wide variety of wildlife. The united states emerged from 13 British Colonies along the East Coast. On July 4,1776, as the colonies were fighting Great Britain in the American Revolutionary War, delegates from the 13 Colonies Unanimously adopted the Declaration of Independence.
The United States is a developed country and has the world’s largest national economy by nominal and real GDP, benefiting from an abundance of natural resources and high worker productivity. America contributes substantially to global growth through its contributions in terms of scientific research and development and education of foreign-born scientists. The Development of the American Economy program’s 66 members and the 14 affiliated researchers with primary appointments in other NBER programs undertake research that spans much of recorded history, every major sub-field of empirical economics, and most of the globe.
Harvard had awarded the doctorate to 16.2%, followed by Colombia with 14.9%.Berkeley, Johns Hopkins, and Princeton were tied with 8.1% each. These five universities , four of them private, had provided the doctoral training for more than half (55.4%) of America’s Noble laureates. University of lllinois at Urbana- Champaign and University of California – Davis are the leading institutes in food and nutrition sciences in America. American society for nutrition has recognized a cornell Scientist Stydying the intersection of food and health. Dr. Rui Hai Liu, Professor in the department of Food Science, has been named the 2016 General Mills Bell institute of Health and Nutrition Innovation Award Winner for his Contributions to Cereal grain and grain component research. List of food sciences journals USA provide good quality article and better scientific research on the techniques and development in the USA.