The United States of America (USA) is a country primarily located in North America, comprising 50 states, a federal district (Washington, D.C.), and several territories. It is the third-largest country in the world by total area, covering approximately 9.8 million square kilometers. The USA shares land borders with Canada to the north and Mexico to the south, with coastlines along the Atlantic Ocean, Pacific Ocean, and the Gulf of Mexico.

The USA has a rich history, dating back thousands of years with the indigenous peoples who inhabited the land long before European exploration. The country was colonized by European powers in the 16th and 17th centuries, with Great Britain establishing the 13 original colonies. After the American Revolution, the USA declared independence on July 4, 1776, and later adopted the U.S. Constitution in 1787, establishing a federal republic with a strong democratic system.

Today, the USA is the world’s largest economy and a global leader in technology, innovation, military power, and culture. It has a highly diverse population of over 330 million people, with major urban centers like New York City, Los Angeles, Chicago, and Houston. The country ranks high in economic freedom, education, healthcare, and quality of life.

The USA is a member of several key international organizations, including the United Nations (UN), G7, G20, NATO, World Trade Organization (WTO), and the Organization for Economic Co-operation and Development (OECD).