The United States of America, USA, celebrates its independence day today (July 4, 2012). Its a federal holiday commemorating the independence of the USA from the Kingdom of Great Britain on July 4,1776.
Each year on July 4, Americans celebrate their freedom and independence with barbecues, picnics, and family gatherings.
U.S. is a federal constitutional republic comprising of 50 states and a federal district. It has the largest national economy in the world. It is the most culturally and ethnically diverse nation in the world due to the assimilation of immigrants to the country. It is one of the most influential countries in the world, enjoying numerous bilateral relations with nations around the globe.
It has over 312million people. It is the 3rd or 4th largest country by total area, and the 3rd largest by both land area and population.