United States of America as a General rule this country called the United States US or America is a Federal constitutional Republic comprising fifty States and a Federal district. The country is located in the Central part of North America located where its forty-eight adjacent States and Washington D.C. is its capital. USA lies between Pacific and Atlantic oceans and is bordered to the North by Canada and to the South by Mexico.
Alaska is in the northwestern part of the continent and borders with Canada to the East and Russia to the West across the Bering Strait. Hawaii is an archipelago in the middle of the Pacific Ocean. The country also possesses several territories in the Caribbean sea and the Pacific ocean.
With an area of 379 square miles 983 million km2 and with a population of about 309 million people in the United States is the third or fourth largest country by total area, and ranks third in area and population. This is one of the most ethnically diverse and multicultural countries in the world, the product of large-scale immigration from many countries. The US economy is the largest national economy in the world in the estimates of gross domestic product GDP which is 14.4 trillion dollars accounting for a quarter of global GDP and a fifth of global GDP.
So the United States is the most developed and prosperous country that many people dream of becoming a United States citizen and live here. For this, the country annually hosts the Green Card lottery.
Indigenous peoples of Asian origin lived in the U.S. for many thousands of years. After meeting with the Europeans, the population of Indians decreased significantly due to disease and war. United States of America was founded by thirteen British colonies located along the Atlantic coast. July 4, 1776 they issued the Declaration of independence which declared their right of self-determination and allowed them to create alliances. In the American revolution the rebellious States defeated the British Empire. This was the first successful colonial war of independence. In Philadelphia was signed the Convention on the adoption of the Constitution of the United States September 17, 1787. In the course of its ratification the following year the state became part of a single Republic with a strong Central government. In 1791 ratified the bill of rights which consisted of ten constitutional amendments guaranteeing many of the rights and freedoms of citizens .
In the 19th century, the United States acquired land in France, Spain, the UK, Mexico, and Russia annexed the Republic of Texas and Hawaii. Disputes between the agrarian South and industrial North over the rights